@article{MS2_1988__63_1_167043,
     author = {Trygve Johnsen},
     title = {Multiplicities of solutions to some enumerative contact problems.},
     journal = {Mathematica Scandinavica},
     pages = {87--108},
     publisher = {mathdoc},
     volume = {63},
     number = {1},
     year = {1988},
     zbl = {0688.14051},
     url = {http://geodesic.mathdoc.fr/item/MS2_1988__63_1_167043/}
}