Shiaofen Fang Rajagopalan Srinivasan Raghu Raghavan Joan T. Richtsmeier Volume morphing and rendering - An integrated approach. 59-81 2000 17 Computer Aided Geometric Design 1 http://dx.doi.org/10.1016/S0167-8396(99)00039-4 db/journals/cagd/cagd17.html#FangSRR00