Zheng, X.; Martin, L. D., Zhou, Z., Burnham, D. A., Zhang, F., Miao, D. Fossil evidence of avian crops from the Early Cretaceous of China. Proceedings of the National Academy of Sciences. 2011-09-06. doi:10.1073/pnas.1112694108.引文使用过时参数coauthors (帮助)
