 |
Bang-Jensen, Jørgen (Ed.) Classes of directed graphs Cham, Switzerland : Springer, 2018. xxii, 636 p. -- (Springer monographs in mathematics) QA166.15 C53 |
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Bang-Jensen, Jørgen (Ed.) Classes of directed graphs Cham, Switzerland : Springer, 2018. xxii, 636 p. -- (Springer monographs in mathematics) QA166.15 C53 |