References
- KAKICHASHVILI , SH. D. 1972 . Optika Spektrosk. , 33 : 324
- KAKICHASHVILI , SH. D. 1974 . Kvantovaya Electron Vol. 1 , 1435 Moscow
- KAKICHASHVILI , SH. D. 1977 . Optika Spektrosk. , 42 : 370
- TODOROV , T. , TOMOVA , N. and NIKOLOVA , L. 1983 . Optics Commun. , 47 : 123
- JONATHAN , J. M. C. 1982 . Private communication