@article{MM2_1991__72_1_155628,
     author = {Julio Castellanos and Ana Nunez},
     title = {On the geometry of the sequence of infinitely near points.},
     journal = {Manuscripta mathematica},
     pages = {49--66},
     publisher = {mathdoc},
     volume = {72},
     number = {1},
     year = {1991},
     zbl = {0741.14005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155628/}
}