@article{paperid:1034508, author = {Erfanian, Hamid Reza and Noori Skandari, Mohammad Hadi and Vahidian Kamyad, Ali}, title = {A New Approach for the Generalized First Derivative and Extension It to the Generalized Second Derivative of Nonsmooth Functions}, journal = {International Journal of Intelligent Systems and Applications}, year = {2013}, volume = {5}, number = {4}, month = {January}, issn = {2074-904X}, pages = {100--107}, numpages = {7}, keywords = {Generalized Derivative; Smooth and Nonsmooth Functions; Linear Programming; Optimization}, }