@article{STO_1984_1984_1_a11,
     author = {Agell, N\'uria},
     title = {Sobre la concavidad de t-normas y de funciones triangulares.},
     journal = {Stochastica},
     pages = {91-95},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1984},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/STO_1984_1984_1_a11/}
}