User talk:2601:340:4200:1E82:95E0:A5A8:34CF:F010

July 2021
Hello, I'm Cassiopeia. I noticed that you added or changed content in an article, Sergey Spivak, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page. Thank you.  Cassiopeia(talk) 20:14, 4 July 2021 (UTC)