@article{TM_2002_236_a48,
     author = {P. Mormul},
     title = {Discrete {Models} of {Codimension-Two} {Singularities} of {Goursat} {Flags
}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {491--502},
     publisher = {mathdoc},
     volume = {236},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_2002_236_a48/}
}