Information icon Hello, I'm Materialscientist. I noticed that you made a change to an article, 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) 09:43, 30 April 2014 (UTC)Reply

Hello, thanks, I know how to do referencing, but I had problems with internet connection now, so I saved infos. I used Czech wikipedia as a source too, but I don't know how to make link to another wikipedia. --Vincislao Rossellini (talk) 09:56, 30 April 2014 (UTC)Reply