@article{10_2140_agt_2015_15_933,
     author = {Cheng, Zhiyun and Gao, Hongzhu},
     title = {Positive quandle homology and its applications in knot theory},
     journal = {Algebraic and Geometric Topology},
     pages = {933--963},
     year = {2015},
     volume = {15},
     number = {2},
     doi = {10.2140/agt.2015.15.933},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2015.15.933/}
}