@incollection{MEM_2010_39_1_a3,
     author = {Kelevedjiev, Emil and Iordanka, Gortcheva},
     title = {Method of {Linear} {Programming} as an {Idea} for {High} {School} {Curriculum}},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {49--62},
     year = {2010},
     volume = {39},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MEM_2010_39_1_a3/}
}