@article{IJAMCS_2011_21_1_a4,
     author = {Kozierkiewicz-Hetma\'nska, A. and Nguyen, N. T.},
     title = {A method for learning scenario determination and modification in intelligent tutoring systems},
     journal = {International Journal of Applied Mathematics and Computer Science},
     pages = {69--82},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJAMCS_2011_21_1_a4/}
}