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This article should be listed under Physics or Materials Science, not Mathematics. Mathematics deals with abstract quantitative concepts. This equation deals with Platinum wire. Arch dude 19:25, 5 August 2006 (UTC)[reply]

The changes in February 2012‎ by 129.6.180.41 seem suspect. The URL is to a DE domain with German text and it has a session ID in the link. I think there are probably better references. The other changes seem fine but I think a better URL is needed. 38.116.199.99 (talk) 20:28, 22 October 2019 (UTC)[reply]