Jassim, W. S. (2017). Incidence Matrices of Directed Graphs of Groups and their up-down Pregroups. Sultan Qaboos University.
Citace podle Chicago (17th ed.)Jassim, Wadhah S. Incidence Matrices of Directed Graphs of Groups and Their Up-down Pregroups. Sultan Qaboos University, 2017.
Citace podle MLA (9th ed.)Jassim, Wadhah S. Incidence Matrices of Directed Graphs of Groups and Their Up-down Pregroups. Sultan Qaboos University, 2017.
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