@article{CC_2004_33_4_a4,
     author = {Kulczycki, Piotr and Wisniewski, Rafael and Kowalski, Piotr and Krawiec, Karol},
     title = {Hard and soft sub-time-optimal controllers for a mechanical system with uncertain mass},
     journal = {Control and Cybernetics},
     pages = {573--587},
     year = {2004},
     volume = {33},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2004_33_4_a4/}
}