标题：A note on the problem of finding a <mml:math alttext="$(3, 9)$" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mn>3</mml:mn><mml:mo>,</mml:mo><mml:mn>9</mml:mn></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:math>-cage
期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1985
卷号：8
DOI：10.1155/S0161171285000916
出版社：Hindawi Publishing Corporation
摘要：In this paper, we discuss The poblem of finding a (3,9)-cage. A hamiltonian graph with girth 9 and 54 vertices is given. Except four vertices, each of
the remaining vertices of this graph has valency Three. This graph is obtained with the aid of a computer.
