Authors: Kopp, OC Bennett, ME

Citation: Oc. Kopp et Me. Bennett, A comparison of the loss of CO and CO2 during coalification, INT J COAL, 47(1), 2001, pp. 63-66

Authors: Kopp, OC Bennett, ME Clark, CE

Citation: Oc. Kopp et al., Volatiles lost during coalification, INT J COAL, 44(1), 2000, pp. 69-84

Authors: Kopp, OC

Citation: Oc. Kopp, Teach evolution, not atheism, GEOTIMES, 45(3), 2000, pp. 4-4