even when you run mag. it comes up with a couple in china and maybe one in australia.....if it's that hard to get lithium sounds like a better option but lets see what we can find...here's a link I found but have not explored it...beware there was some advertising on the first...anyhow looks like there could be some good info....
http://mg.tripod.com/links.htm#prod
http://www.magnesium.com/w3/