TY  - JOUR
AU  - Kamalamma, K. N.
TI  - The congruence of tangents to a system of curves on a surface
JO  - Compositio Mathematica
PY  - 1956-1958
SP  - 247
EP  - 256
VL  - 13
PB  - Kraus Reprint
UR  - http://www.numdam.org/item/CM_1956-1958__13__247_0/
LA  - en
ID  - CM_1956-1958__13__247_0
ER  -