1. Michigan copper sulfide project, Keweenaw Peninsula,1989
2. Hydrothermal alteration of a breccia pipe deposit, Tribag mine, Batchawana Bay, Ontario;Armbrust;Econ. Geol.,1969
3. Grant 48: Geology of the Jogran disseminated CuMo deposit, Ryan Township, Ontario;Armbrust;Ont. Geol. Surv. Misc. Pap.,1980
4. Petrography of CuNi mineralization in the Mineral Lake area, Ashland County, Wisconsin;Bakheit,1981
5. Crustal structure of the Midcontinent rift system: Results from GLIMPCE deep seismic reflection profiles;Behrendt;Geology,1988