1.
C R Acad Bulg Sci
; 22(1): 105-8, 1969.
Article
in English
| MEDLINE
| ID: mdl-5396218
2.
C R Acad Bulg Sci
; 21(9): 969-71, 1968.
Article
in English
| MEDLINE
| ID: mdl-5723991
3.
C R Acad Bulg Sci
; 20(10): 1113, 1967.
Article
in English
| MEDLINE
| ID: mdl-5602039