1. R. W. Hamming Numerical Methods for Scientists and Engineers pp. 96-97 (Mc- Graw-Hill Book Company Inc. 1962). R. W. Hamming Numerical Methods for Scientists and Engineers pp. 96-97 (Mc- Graw-Hill Book Company Inc. 1962).
2. R. W. Hamming Numerical Methods for Scientists Engineers pp. 68-73 (McGraw-Hill 1962). R. W. Hamming Numerical Methods for Scientists Engineers pp. 68-73 (McGraw-Hill 1962).