TY  - JOUR
AU  - Seppo Heikkilä
TI  - On the complete integrability of the first order total differential equation
JO  - Annales Fennici Mathematici
PY  - 1971
VL  - 471-500
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1971.495/
DO  - 10.5186/aasfm.1971.495
LA  - en
ID  - AFM_1971_471-500_a5
ER  -