1. An algorithm for least squares estimation of nonlinear parameters;Marquardt;SIAM J. Appl. Math.,1968
2. On a Modification of Marquardt's compromise. Rationale and Applications;Garcia-Peña,1980
3. SAS—Statistical Analysis System;Barr,1979
4. Applied Analysis;Lanczos,1956
5. BMDP, Biomedical Computer Programs;Dixon,1977