1
Published: 1991
Superior document: Sitzungsberichte der Akademie der Wissenschaften Berlin : N 1990, 10
2
Published: 1968
Superior document: Nova acta Leopoldina : Supplementum 1
3
Published: 1989
Superior document: Nova acta Leopoldina N.F., 274 = Bd. 64
4
Published: 2000
Superior document: Nova acta Leopoldina N.F., 317 = Bd. 83
5
Published: 1995
Superior document: Nova acta Leopoldina N.F. 295 = Bd. 73