摘要: (1973). The Lagrange Multiplier Rule. American Mathematical Monthly: Vol. 80, No. 8, pp. 922-925.
sci-hub.se 参考文章(1)
R. L. Brooks, On Colouring the Nodes of a Network Mathematical Proceedings of the Cambridge Philosophical Society. ,vol. 37, pp. 194- 197 ,(1941) , 10.1017/S030500410002168X