1.
Z Gesamte Hyg
; 28(10): 734-8, 1982 Oct.
Article
in German
| MEDLINE
| ID: mdl-7180055
2.
Z Gesamte Hyg
; 28(8): 584-8, 1982 Aug.
Article
in German
| MEDLINE
| ID: mdl-7136076
3.
Sante Publique (Bucur)
; 24(4): 347-57, 1981.
Article
in German
| MEDLINE
| ID: mdl-7046108