@article{SM_2004_195_12_a1,
     author = {A. M. Il'in and B. I. Suleimanov},
     title = {Birth of step-like contrast structures connected with a cusp catastrophe},
     journal = {Sbornik. Mathematics},
     pages = {1727--1746},
     publisher = {mathdoc},
     volume = {195},
     number = {12},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_12_a1/}
}