https://arxiv.org/
arViv is underrated. has some ethos of open-source. sometimes some use it for a timestamp of who did it first, which could be bit messy
https://arxiv.org/search/?query=LK-99&searchtype=all&abstracts=show&order=-announced_date_first&size=50
https://arxiv.org/search/?query=LK-99&searchtype=all&abstracts=show&order=-announced_date_first&size=50
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