TY  - JOUR
AU  - Margalit, Dan
TI  - A lantern lemma
JO  - Algebraic and Geometric Topology
PY  - 2002
SP  - 1179
EP  - 1195
VL  - 2
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2002.2.1179/
DO  - 10.2140/agt.2002.2.1179
ID  - 10_2140_agt_2002_2_1179
ER  -