Underwood, James R., Jr. (Kansas State Univ. Manhattan, KS, United States)
Casacchia, Ruggero (Instituto de Astrofisica de Andalucia Granada, Spain)
Diplanetologia, Reparto (Viale Univ. Rome, Italy)
Woronow, Alex (Houston Univ. TX., United States)
Teeling, Michael J. (Groundwater Technology, Inc. Checktowaga, NY., United States)