1.
Aere Perennius
; 23: 25-31, 1976 Apr.
Article
in Dutch
| MEDLINE
| ID: mdl-11633872
2.
Aere Perennius
; 22: 1-9, 1976 Jan.
Article
in Dutch
| MEDLINE
| ID: mdl-11627256
3.
Aere Perennius
; 20: 53-8, 1975 Jul.
Article
in Dutch
| MEDLINE
| ID: mdl-11626979
4.
Aere Perennius
; 18: 3-11, 1975 Jan.
Article
in Dutch
| MEDLINE
| ID: mdl-11633832
5.
Janus
; 61(4): 281-95, 1974.
Article
in English
| MEDLINE
| ID: mdl-11610219
6.
Janus
; 57: 173-213, 1970.
Article
in English
| MEDLINE
| ID: mdl-11609703