@article{EXMATH_1992_1992_1_a26,
     author = {Alegr{\'\i}a Ezquerra, Pedro},
     title = {Levantamientos biparam\'etricos de formas de {Toeplitz.}},
     journal = {Extracta mathematicae},
     pages = {16-19},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1992_1992_1_a26/}
}