@article{IJOPCM_2009__2_1_229044,
     author = {Ouafi, Rachid and Khelladi, Abdelkader},
     title = {Non orthogonal cutting problem the case of trapezoidal pieces.},
     journal = {International journal of open problems in computer science and mathematics},
     pages = {69},
     year = {2009},
     volume = {2},
     number = {1},
     zbl = {1206.90152},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJOPCM_2009__2_1_229044/}
}