@article{10_14708_ma_v45i2_4378,
     author = {Virtue U Ekhosuehi},
     title = {On graduation of enrolment size in a multi-echelon educational system},
     journal = {Mathematica Applicanda},
     pages = { 119 -- 126},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {2017},
     doi = {10.14708/ma.v45i2.4378},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v45i2.4378/}
}