@article{ARM_1995_31_2_a3,
     author = {Chrastinov\'a, Veronika},
     title = {On the {Darboux} transformation. {II}},
     journal = {Archivum mathematicum},
     pages = {121--138},
     year = {1995},
     volume = {31},
     number = {2},
     mrnumber = {1357980},
     zbl = {0837.34015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1995_31_2_a3/}
}