@article{MASLO_1998_48_4_a8,
     author = {Datta, Mahuya and Mukherjee, Amiya},
     title = {Parametric homotopy principle of some partial differential relations},
     journal = {Mathematica slovaca},
     pages = {411--421},
     year = {1998},
     volume = {48},
     number = {4},
     mrnumber = {1693501},
     zbl = {0965.58006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1998_48_4_a8/}
}