Pettit, George R.; Herald, Cherry L.; Leet, John E.; Gupta, Rajesh; Schaufelberger, Daniel E.; Bates, Robert B.; Clewlow, Paul J.; Doubek, Dennis L.; Manfredi, Kirk J.; Rützler, Klaus; Schmidt, Jean M.; Tackett, Larry P.; Ward, Franklin B.; Bruck, Michael; Camou, Fernando(1990)
Pettit, George R.; Herald, Cherry L.; Boyd, Michael R.; Leet, John E.; Dufresne, Claude; Doubek, Dennis L.; Schmidt, Jean M.; Cerny, Ronald L.; Hooper, John N. A.; Ruetzler, Klaus C.(1991)
