Wolfgram, Diane, 2002, Some Thoughts on Ore Controls in the J-M Reef, Stillwater Complex, Montana. 9th International Platinum Symposium Extended Abstracts, p. 477. 

Wolfgram, Diane, 2002, Rare Earth Element Geochemistry Orientation Survey of Plagioclase Cumulates Below, Within, and Immediately Above the J-M Reef, Stillwater Mine, Nye, Montana. 9th International Platinum Symposium Extended Abstracts, pp. 473-475.