2-distance coloring of sparse planar graphs.
Borodin, O.V., Ivanova, A.O., Neustroeva, T.K. (2004)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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Borodin, O.V., Ivanova, A.O., Neustroeva, T.K. (2004)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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Pavel Galajda (1981)
Mathematica Slovaca
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Ján Pidany (1968)
Aplikace matematiky
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This paper derives the necessary and sufficient conditions such that the system of equations can be transformed into the form . These equations can be constructed with the help of nomograms with oriented transparency.
Zhuravlev, E.V. (2006)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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В. Демьяненко (1967)
Acta Arithmetica
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