Mohamed F. Hassan Ioannis P. Ivrissimtzis Neil A. Dodgson Malcolm A. Sabin An interpolating 4-point C2 ternary stationary subdivision scheme. 1-18 2002 19 Computer Aided Geometric Design 1 http://dx.doi.org/10.1016/S0167-8396(01)00084-X db/journals/cagd/cagd19.html#HassanIDS02