User talk:Enricfs

Recent edits to Quantum chemistry
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Quantum chemistry, but you didn't provide a reliable source. It's been removed for now, but if you'd like to 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! Materialscientist (talk) 12:10, 2 October 2015 (UTC)
 * Note that your edits are retained in the article's History, such that it should be easy to retrieve them once you have a source in hand. TimidGuy (talk) 14:09, 2 October 2015 (UTC)