By Kubicka Ewa   Kubicki Grzegorz   in Mathematics Magazine

ISSN:1930-0980|84|1|42-48

Mathematical Association of America‎(2011)‎

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By Kubicki Grzegorz   Lehel Jenő   Morayne Michał   in Order

ISSN:0167-8094|20|2|91-97

Springer Publishing Company ‎(2003)‎

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