@article{QUE_1986_1986_1_a13, author = {Onieva, Luis and Larra\~neta Astola, Juan Carlos}, title = {Soluciones aproximadas al problema de distribuci\'on a dos niveles.}, journal = {Q\"uestii\'o}, pages = {181-191}, publisher = {mathdoc}, volume = {10}, number = {3}, year = {1986}, language = {es}, url = {http://geodesic.mathdoc.fr/item/QUE_1986_1986_1_a13/} }