1.
Z Gesamte Hyg
; 30(4): 218, 1984 Apr.
Article
in German
| MEDLINE
| ID: mdl-6331017
2.
Z Gesamte Hyg
; 26(7): 512-5, 1980.
Article
in German
| MEDLINE
| ID: mdl-7445598
3.
Atmos Environ
; 6(11): 865-7, 1972 Nov.
Article
in English
| MEDLINE
| ID: mdl-5084322