1. L. Yang, Chien-yeh-Chien and R. Hudson,J. Electrochem. Soc. 106 (1959) 632.
2. E. Budevski, ?Progress in Surface and Membrane Science?, Vol. 2, Academic Press, New York (1976) p. 71.
3. E. Budevski, V. Bostanov and T. Vitanov, ?Rost Crystalov?, Vol. 10, Nauka, Moscow (1974) p. 230.
4. A. Chernov,Kristallogr. 7 (1962) 895.
5. Idem, ibid 8 (1963) 87.