by Maitzen, H.M., Paunzen, E., Pöhnl, H., Rode-Paunzen, M., Netopil, M., Stütz, Ch, Baum, H.
Published in Proceedings of the International Astronomical Union (01.07.2004)

by BREGER, MICHEL, MAITZEN, HANS M., COWLEY, ANNE P.
Published in Publications of the Astronomical Society of the Pacific (01.06.1972)