Aquaro 1984 # Bader 1989 # Bader 1990a # Bannert 1979 # Ben 1980 # Ben 1981 # Böhme 1983 # Böhme 1986 # Böhme 1988 # Böhme 1989 # Böhme 1991 # Böhme 1992 # Bremer 1991 # Fairweather 1984 # Grant 1980 # Heyman 1982 # Kramer 1981 # Kullmann 1992b # Lefkowitz 1978 # Lefkowitz 1981 # Leroy 1985 # Martino 1982 # Rethy 1987 # Ritoók 1987 # Ritoók 1989b # Russo C. 1983b # Thesleff 1985 # Tsagarakis 1986 # Vogt 1991 # Wathelet 1981 # West M. 1988 #