Yong Kui Liu,Xiao Qiang Wang,Shu Zhe Bao,Matej Gomboši,Borut Žalik.An algorithm for polygon clipping, and for determining polygon intersections and unions[J].Computers and Geosciences,2006.
You-Dong Liang,B. A. Barsky.A New Concept and Method for Line Clipping[J].ACM Transactions on Graphics (TOG),1984(1).
Ivan E. Sutherland,Gary W. Hodgman.Reentrant polygon clipping[J].Communications of the ACM,1974(1).