User talk:Ypsilon0

Recent edit to Isomer
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Isomer, but you didn't provide a summary explaining it nor reliable source. It's been removed for now, but if you'd like to explain it or include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you! Caballero/Historiador (talk) 17:54, 16 December 2015 (UTC)