1.
Cir. & cir
; Cir. & cir;52(3): 176-84, 1984.
Article
in Spanish
| LILACS
| ID: lil-25184
2.
Cir. & cir
; Cir. & cir;51(2): 163-72, 1983.
Article
in Spanish
| LILACS
| ID: lil-20067