TY  - JOUR
AU  - G. Ananda Swarup
TI  - Projective Planes in Irreducible 3-Manifolds.
JO  - Mathematische Zeitschrift
PY  - 1973
SP  - 305
EP  - 318
VL  - 132
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1973__132_171931/
ID  - MZ_1973__132_171931
ER  -