@article{10_14736_kyb_2019_2_0337,
     author = {Bahaa, G. M.},
     title = {Optimal control problem and maximum principle for fractional order cooperative systems},
     journal = {Kybernetika},
     pages = {337--358},
     publisher = {mathdoc},
     volume = {55},
     number = {2},
     year = {2019},
     doi = {10.14736/kyb-2019-2-0337},
     mrnumber = {4014590},
     zbl = {07144941},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14736/kyb-2019-2-0337/}
}