@article{IM2_1997_61_6_a5,
     author = {A. S. Tikhomirov},
     title = {The variety of complete pairs of zero-dimensional subschemes of an algebraic surface},
     journal = {Izvestiya. Mathematics},
     pages = {1265--1291},
     year = {1997},
     volume = {61},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1997_61_6_a5/}
}