@article{05169465,
title = {On the theory of Sobolev-type classes of functions with values in a metric space.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {47},
year = {2006},
pages = {146-168},
zbl = {1113.46029},
language = {en},
url = {http://dml.mathdoc.fr/item/05169465}
}
Reshetnyak, Yu.G. On the theory of Sobolev-type classes of functions with values in a metric space.. Sibirskij Matematicheskij Zhurnal, Tome 47 (2006) pp. 146-168. http://gdmltest.u-ga.fr/item/05169465/