@article {Ralph:October 2006:0032-1400:200, author = "Ralph, Tom R.", title = ""Principles of Fuel Cells"", journal = "Platinum Metals Review", volume = "50", year = "October 2006", abstract = "", pages = "200-201(2)", url = "http://www.ingentaconnect.com/content/matthey/pmr/2006/00000050/00000004/art00007" doi = "doi:10.1595/147106706X158789" }