Citation: Yanpei, Liu, Boolean Approach to Planar Embeddings of a Graph, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 5(1), 1989, pp. 64-79
Citation: Yanpei, Liu, Combinatorial Invariants on Planar Graphs, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 11(2), 1995, pp. 211-220
Citation: Yanpei, Liu, Boolean Planarity Characterization of Graphs, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 4(4), 1988, pp. 316-329