中国科学院数学与系统科学研究院期刊网
AMS
On the Differential Polynomial of a Graph
Ludwin A. BASILIO-HERNÁNDEZ, Walter CARBALLOSA, Jesús LEAÑOS, José M. SIGARRETA
Acta Mathematica Sinica . 2019, (3): 338 -354 .  DOI: 10.1007/s10114-018-7307-3