@article{MEM_2020_49_a9,
     author = {Boumova, Silvia and Drensky, Vesselin and Kostadinov, Boyan},
     title = {A {Diophantine} transport problem from 2016 and its possible solution from 1903},
     journal = {Mathematics and Education in Mathematics},
     pages = {89--113},
     publisher = {mathdoc},
     volume = {49},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MEM_2020_49_a9/}
}