Randomguess

Welcome

Hello, Randomguess! Welcome to Wikipedia! Thank you for your contributions. You may benefit from following some of the links below, which will help you get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are already excited about Wikipedia, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field when making edits to pages. Happy editing! Pharaoh of the Wizards (talk) 22:50, 29 December 2011 (UTC) Getting Started The five pillars of Wikipedia • Tutorial • Your first article How to: edit a page • upload an image Getting Help Frequently Asked Questions New contributors' help page Where to: ask questions • make requests Request administrator attention Policies and Guidelines Neutral point of view • Reliable sources Verifiability • Citing sources • No original research What Wikipedia is not • Biographies of living persons Manual of Style • Three-revert rule • Sock puppetry Copyrights • Policy for non-free content • Image use policy External links • Spam • Vandalism Deletion policy • Conflict of interest • Notability The Community Community Portal • Adopt-a-user program Assume good faith • Civility • Etiquette No personal attacks • Resolving disputes Build consensus • Village pump Signpost • IRC channels • Mailing lists Things to do Be bold in editing • Help develop an article Maintenance • Peer review • Requested articles Join a WikiProject • Translating articles Cleaning up: General • Spam • Vandalism Miscellaneous Categories • Disambiguity • Stubs User pages • Talk pages Useful templates • Tools • User scripts

References

Hi Randomguess.

I have recently reverted your addition of references in a couple of places. I see that you have added similar references in other articles as well. There is probably nothing wrong with the material in these references, but you should know that lecture notes and the like do not count as reliable sources. What constitutes reliable sources is to some extent relative. It is often possible to find freely available reliable sources, even in the most demanding areas.

I am sorry for the reverts, and please don't think I am "policing you", but please be a bit more selective with references. In math/physics articles it is typically required that sources are published in peer-reviewed journals (having a DOI) or are notable textbooks/monographs (having a ISBN). Exceptions exist of course. YohanN7 (talk) 11:20, 19 May 2015 (UTC)