中国科学院数学与系统科学研究院期刊网
AMS
Strong Connections and Invertible Weak Entwining Structures
J. N. ALONSO ÁLVAREZ, J. M. FERNÁNDEZ VILABOA, R. GONZÁLEZ RODRÍGUEZ
Acta Mathematica Sinica . 2012, (7): 1443 -1460 .  DOI: 10.1007/s10114-012-0088-1