用zotero导出的,你试试看
@article{wenping_2007,
title = {On the {{Crossing Number}} of {{$K_m$}} {$\square$} {{$P_n$}}},
author = {Wenping, Zheng and Xiaohui, Lin and Yuansheng, Yang and Chong, Cui},
date = {2007-06},
journaltitle = {Graphs and Combinatorics},
volume = {23},
number = {3},
pages = {327--336},
issn = {0911-0119, 1435-5914},
doi = {10.1007/s00373-007-0726-z}
}
看了下跟文献中的差不多
问 bibtex不识别数学公式的大小写