Below are some frequently asked questions. If you cannot find your answer here, check out the [LAPSE discussion forum]. You may also try contacting us at []

Should I submit a pre-print, post-print, or published version of my work?

Consult [Pre-prints, Post-prints, and Published Articles] for more information. When in doubt, choose pre-print.

Can I submit conference proceedings?

Usually publishers handle conference proceedings, and each situation is different. Conference proceedings published in a journal like IFAC-Papers Online or Energy Procedia typically follow journal rules and allow pre-prints or post-print submission, with potentially an embargo period. Conference proceedings published as a book, such as Computer Aided Chemical Engineering often are not permitted. If you are able to submit, you should choose the pre-print, post-print, or published article record type when submitting.

Can I submit conference slides?

In most cases, yes, unless the conference or your own organization prohibits this. Use the Conference Presentations record type.

Can I submit my thesis?

Check with your university. Often, the answer is no. If you are permitted, use the Thesis record type as it contains special meta data for search engines such as Google Scholar. If your thesis is archived on your university with a DOI, one idea is to submit your pre-prints/post-prints of your research and set a link to the DOI of your thesis in each record.

What is the difference between the Presentations record type and the Conference Presentations record type?

Presentations are for anything not presented at conferences, like in lectures, at meetings, or webinars.

Can I submit video?

We currently support any file type, but files must be under 50MB so that limits many video options. Video files are downloaded by the user as opposed to in-browser viewing by default. Some browsers will play the video in a separate tab but it is user-specific.

Why do some keywords contain hyperlinks and others do not?

LAPSE currently maintains a set of curated keywords. Hyperlinked keywords are these controlled words. You are free to use any keywords you want since they can be picked up by the search engine, but using controlled keywords helps link your article to well-defined concepts within the field. To suggest more keywords, email

Can I select more than one subject?

No,each record should be placed in one of the specially curated subjects, or “Other”.

I want to submit a pre-print now for immediate release and submit a post-print that needs an embargo. What should I do?

You have a few options. One is to submit the pre-print now, and then later once the embargo period is up, create a revision of your pre-print by providing an updated version of the manuscript (the post-print). This has the advantage of having a unique LAPSE ID for both, and users who are following the link to the pre-print will encounter the updated post-print by default. The disadvantage is that you have to wait until the embargo period is over before doing this manually.

An alternative is to create two LAPSE records, one for the pre-print and one for the post-print, setting an embargo on the post print. You can use the Links feature to link them together so that visitors to the pre-print will see the link to the more updated post-print. The disadvantage is that there are two LAPSE IDs in this case.

I’ve submitted a pre-print a while ago, and now the article has been accepted for publication. What should I do?

You can update the pre-print record with a revision that contains the post-print (if the embargo period has ended). Similarly, if the article is open-access, you can update the pre-print record with a revision that contains the published version. In most cases, you should add a link in your pre-print record to the final publisher’s version using the DOI.

I’ve submitted a pre-print for an article that was rejected for publication. What do I do?

Ouch, sorry. As far as LAPSE goes, you can still leave the article in LAPSE if you would like. If necessary, revise the submission to remove any journal information that you put in. You may also retract the article in your dashboard, which may be necessary in extreme circumstances.

Can I delete my submission? I made a mistake.

If you can correct the mistakes in a revised version, use the revision feature. Note that not all items can be modified. Otherwise, you will have to retract the submission and start a new one (with a new ID).

Do you have multiple language support?

At the moment, the website itself in English. However, nearly all information in LAPSE can be entered in UTF-8 format, which means that most characters are permitted. Author names are restricted to Latin character sets (including accents, encompassing English, French, German, Norwegian, Spanish, Swedish, Portuguese, and Danish) for search engine purposes. LAPSE allows you to submit alternate titles and abstracts in a second language. The primary language does not have to be English.

One of my papers is in LAPSE but I didn’t submit it. Can I take ownership of the record, make changes, and/or have it removed?

If you find material of yours in LAPSE but you did not submit it, it was usually either submitted either by a co-author or the journal itself (for published research). Note that some journals automatically submit all published works into LAPSE. If it was submitted by a journal (look for “Auto Uploader” as the submitting user on the right hand side of the LAPSE record), you can take ownership by emailing us at from one of the author email addresses associated with the account. If submitted by a co-author, only a the corresponding author can take control (if stated in the manuscript, published version, or LAPSE record).

Otherwise if submitted by a third party without the authority of the copyright holder, submit a takedown request to