User talk:Ioana Catana

November 2019
Hello, I'm Aranya. I noticed that you added or changed content in an article, Quantum electrodynamics, 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 the tutorial on citing sources, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. – Aranya (talk) 14:25, 1 November 2019 (UTC)