On the face-vectors of trivalent convex polyhedra
Stanislav Jendroľ (1983)
Mathematica Slovaca
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Stanislav Jendroľ (1983)
Mathematica Slovaca
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Stanislav Jendroľ, Ernest Jucovič (1977)
Mathematica Slovaca
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Marián Trenkler (1975)
Matematický časopis
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