Erkan Ülker Veysi Isler An Artificial Immune System Approach for B-Spline Surface Approximation Problem. 49-56 2007 conf/iccS/2007-2 International Conference on Computational Science (2) http://dx.doi.org/10.1007/978-3-540-72586-2_7 db/conf/iccS/iccS2007-2.html#UlkerI07