If you follow this link you will find the master journal list at the bottom of the page. There is a search engine that allows one to search by a number of different criteria. This is a list of acceptable references when citing scientific theories and published papers. If a journal is not referenced here, the poster must demonstrate that the source is a peer-reviewed journal recognized by the mainstream academic community. Obviously we reference material published in news and other media sources, but if a specific and obscure, new, or otherwise generally unknown theory [not common knowledge] is to be used as a scientific explanation for a phenomenon, then the theory must be found in a paper published in a journal listed at this link. http://scientific.thomson.com/index.html As an example: If it is to be argued that earthlights are caused by piezoelectric phenomena within the earth's crust, then that theory would require a published paper as a source.