著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
VIZING V. G.,On an estimate of the chromatic class of a p-graph,Discret Analiz,,,1964,3,,25-30,https://cir.nii.ac.jp/crid/1571980075458819456,