@article{PORMA_1985__43_1_114555,
     author = {Garcia-Vadillo, Ernesto and Tarrago, Jos\'e A.},
     title = {Application of the matrix algebra to contact problems in railways},
     journal = {Portugaliae mathematica},
     pages = {121--130},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1985},
     zbl = {0593.73109},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1985__43_1_114555/}
}