J. G. Hatch (University of Western Ontario, London, Canada)
H. Henry (California State University, San Bernardino, CA, USA)
C. Impey (University of Arizona, Tucson, AZ, USA)
A. Lee (St. Cloud State University, St. Cloud, MN, USA)
R. L. Poss (University of Arizona, Tucson, AZ, USA)
R. M. Sinclair (Centro de Estudios Científicos, Valdivia, Chile)
R. Trotta (Imperial College, London, UK)
G. Wells, (Ithaca College, Ithaca, NY, USA)
