中国科学院数学与系统科学研究院期刊网
AMS
Spherical f-Tilings by Scalene Triangles and Isosceles Trapezoids, Ⅱ
Catarina P. AVELINO, Altino F. SANTOS
Acta Mathematica Sinica . 2012, (5): 1013 -1032 .  DOI: 10.1007/s10114-011-9511-2