User talk:68.226.93.8

May 2018
Hello, I'm Zchrykng. I noticed that you made one or more changes to an article, Massless particle, 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! 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. Zchrykng (talk) 00:51, 1 May 2018 (UTC)
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