Hasse, B. ; Marxen, J. C. ; Becker, Wilfried ; Ehrenberg, Helmut ; Epple, M. (2002):
A crystallographic study of the love dart (gypsobelum) of the land snail helix pomatia (l.).
In: Journal of molecular studies, 68, pp. 249-254. [Article]

Hasse, B. ; Ehrenberg, H. ; Marxen, J. ; Marxen, J. C. ; Becker, Wilfried ; Epple, M. (2000):
Calcium carbonate modifications of the mineralized shell of the freshwater snail Biomphalaria glabrata.
In: Chemistry: European journal, 6, pp. 3679-3685. [Article]