中国科学院数学与系统科学研究院期刊网
AMS
Twisted and Absolute Degrees of Maps into the Projective Plane
Marcio Colombo Fenille, Daciberg Lima Gonçalves
Acta Mathematica Sinica . 2025, (5): 1393 -1406 .  DOI: 10.1007/s10114-025-3336-x