Peter Ozsvath, Andras I. Stipsicz and Zoltan Szabo- Combinatorial Heegaard Floer homology and nice Heegaard diagrams
Spectral Global Intrinsic Symmetry Invariant Functions Hui Wang Shijiazhuang Tiedao University Patricio Simari The Catholic University of America Zhixun.
Spectral Global Intrinsic Symmetry Invariant Functions