TY  - JOUR
AU  - Yang, Guoqiu
AU  - Lei, Fengchun
TI  - Amalgamations of Heegaard splittings in 3–manifolds without some essential surfaces
JO  - Algebraic and Geometric Topology
PY  - 2009
SP  - 2041
EP  - 2054
VL  - 9
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2009.9.2041/
DO  - 10.2140/agt.2009.9.2041
ID  - 10_2140_agt_2009_9_2041
ER  -