@article{NSJOM_2001_31_2a_4,
     author = {T. 

 Donchev and R. Ivanov},
     title = {Lower 

 semicontinuous differential inclusions with state constrains},
     journal = {Novi Sad Journal of Mathematics},
     pages = {35-44},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2001},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2001_31_2a_4/}
}