@article{10_14708_ma_v26i40_1856,
     author = {Barbara Bi{\l}y},
     title = {Optimal control of a two-dimensional linear system with a quadratic performance index with constraints on the trajectory and the control},
     journal = {Mathematica Applicanda},
     pages = { 21--29},
     publisher = {mathdoc},
     volume = {26},
     number = {40},
     year = {1997},
     doi = {10.14708/ma.v26i40.1856},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v26i40.1856/}
}