1. Belanger LF (1960) Development structure and composition of the otolithic organs of the rat. Calcification in biological system. Am Assoc Adv Sci Publ 64: 151–162
2. Bjerrum N (1958) Calcium orthophosphates 1, The solid calcium orthophosphates 2, Complex formation in solutions of calcium and phosphate ions. Matematisk-fysiske Meddelelser udgivet af Det Kongelige Danske Videnskabernes Selskab 31: 1–79 (translated by MH Rand)
3. Carlström D, Engström H (1955) The ultrastructure of statoconia. Acta Otolaryngol 45: 14–18
4. Flock Å (1971) Handbook of sensory physiology. In: Loewenstein WR (ed) Principles of receptor physiology, vol 1. Springer, Berlin Heidelberg New York
5. Grüneburg H (1943) The genetics of the mouse. Cambridge Univ Press, London