@article{QUE_1999_1999_1_a15,
     author = {Abraira, V{\'\i}ctor and P\'erez de Vargas, Alberto},
     title = {Generalizaci\'on del coeficiente {Kappa} para datos categ\'oricos ordinales, observadores m\'ultiples y dise\~nos incompletos.},
     journal = {Q\"uestii\'o},
     pages = {561-571},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/QUE_1999_1999_1_a15/}
}