A paper counts as anything published in good faith by researchers who did actual work.

The papers must be published through a medium historically used for scienific papers.

Duplicates or re-uploads of the same paper don't count.

For something to count as a "similar derivitive" it must at least reference one of the original LK-99 papers.

"Meta Papers" about the reaction to LK-99 don't count. It must be on the topic of superconductivity or something similar.

I'm making this question because I wonder even if LK-99 is found to likely not be a RTAP superconductor whether researchers will continue to study it anyway. Obviously if it is a RTAP SC then this should resolve yes anyway.