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中国科学院数学与系统科学研究院期刊网
ISSN 1439-8516 CN 11-2039/O1
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Ricci-flat Graphs with Girth Four
Wei Hua HE, Jun LUO, Chao YANG, Wei YUAN, Hui Chun ZHANG
Acta Mathematica Sinica . 2021, (
11
): 1679 -1691 . DOI: 10.1007/s10114-021-9546-y