@article{MZM_2000_67_2_a11,
     author = {N. V. Timofeeva},
     title = {Smoothness and {Euler} characteristic of the variety of complete pairs $X_{23}$ of zero-dimensional subschemes of length~2 and~3 of algebraic surfaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {276--287},
     publisher = {mathdoc},
     volume = {67},
     number = {2},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_67_2_a11/}
}