@article{MZM_1993_54_3_a1,
     author = {L. S. Efremova},
     title = {A class of twisted products of maps of an interval},
     journal = {Matemati\v{c}eskie zametki},
     pages = {18--33},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_3_a1/}
}