1 “... to an international journal specializing in crystallization. However, the results were not altogether satisfactory...”

2 “... by Elsevier as a special edition of the journal, Solid State lonics, Vol. 12 (1984). In view of the success...”

3 “... that is presented has already been published in different journals and symposia, it might be difficult...”

4 “... representing some results I and my colleagues have recently obtained and pub_ lished in Russian journals...”

5 “.... There have been a number of reviews written on selected aspects of these compounds in various journals...”