 Hello all, in this video we are going to see about how to check for duplicates in new mainly site reference manager. See here in this document I have repeatedly incorporated this lago et al as the first reference and also the last reference which has made the reference list like this and when you are using author date style such as Harvard style, APA style or MLA style the author name will be arranged in alphabetical order like this so hence you can easily find out there is a repeat of or duplicate of references present in your reference list but if you are using say for example van cove style I am changing it into van cove style so when I change this into van cove style it is very difficult to find out first reference and fifth reference and if your document is large that is more than 30 40 references then it is very difficult to find this repeat or duplicate of references so for that previously mainly site was not having any option now they have incorporated the duplicate options in the mainly reference manager site I will give you a caution that this duplicates is not as good as the check for duplicates option present in the older mainly desktop I click on this duplicates automatically the sets of duplicates appear here there are two problems with this option soon that will get upgraded number one is the references appear as per the DOI if you have not entered DOI then that duplicate reference will not appear in this list so since these articles have the same DOI that is identified as duplicates in this list so what you need to do is you need to delete any one of those references to make it only one reference in the reference list so if you do that the problem is if suppose you have incorporated the first reference and second reference if you delete this then automatically the reference get deleted there so in order to avoid that what you need to do is you have to check this duplicate in the reference list then come back here see you place the cursor somewhere where the citation is not present good to this reference list here you just type this lago so automatically the lago which is cited in this document will appear here that is cited both will appear here so what you need to do is if you if you click on this in this place it is getting cited so if you feel this is the better reference than this then you go to this fifth reference in you just uncheck this box and click on this box then you click on this save changes then automatically your reference will get merged here so that is how you can do this check for duplicates then what you need to do is in order to avoid confusion you need to go back to the mainly reference manager there in the reference list you need to see which one you have deleted I have incorporated the second reference there so I am deleting the first reference then the duplicate issue got resolved so when I come back here I click on update from library then that lago reference will not even appear only the lago reference which is cited will appear here the older mainly desktop version this was very easy where we can click on the check for duplicates and there was an option called merge the duplicates so when we select these two and we can merge so that this exercise was not needed if you like this video please click on the like button and share it to your friends thanks for watching