Winkler, C

Bennett, K

Busetta, M

Williams, O-R

Collmar, W

Diehl, R

Lichti, G

Much, R

Schonfelder, V

Steinle, H

Strong, A

Varendorff, M

Bloemaen, H

de Boer, H

den Herder, JW

Hermsen, W

Kuiper, L

Swanenburg, B

de Vries, C

Connors, A

Lockwood, J

Macria, J

McConnell, Mark

Morris, D

Ryan, J

Stacy, G

Webber, W

September 1991

Bulletin of the American Astronomical Society  Journal