@article{paperid:1035406, author = {Effati, Sohrab and Saberi- Nadjafi, Jafar and Saberi Nik, Hassan}, title = {Optimal and adaptive control for a kind of 3D chaotic and 4D hyper-chaotic systems}, journal = {Applied Mathematical Modelling}, year = {2013}, volume = {38}, number = {2}, month = {September}, issn = {0307-904X}, pages = {759--774}, numpages = {15}, keywords = {Optimal control; adaptive control; chaotic and hyper-chaotic systems; Lyaponuv function; Pontryagin principle.}, }