@article{ZNSL_1995_221_a14,
     author = {G. A. Seregin and T. N. Shilkin},
     title = {Some remarks on the mollification of piecewise-linear homeomorphisms},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {235--242},
     publisher = {mathdoc},
     volume = {221},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1995_221_a14/}
}