The following publications are possibly variants of this publication:
- Variance Soft Shadow MappingBaoguang Yang, Zhao Dong, Jieqing Feng, Hans-Peter Seidel, Jan Kautz. cgf, 29(7):2127-2134, 2010. [doi]
- Variance soft shadow mappingZhao Dong, Baoguang Yang. si3d 2010: [doi]
- Exponential Soft Shadow MappingLi Shen, Jieqing Feng, Baoguang Yang. cgf, 32(4):107-116, 2013. [doi]