TY - JOUR AU - P. M. Porvatov AU - S. M. Elsakov TI - Methods for determining mobile location in zones without GPS reception JO - Journal of computational and engineering mathematics PY - 2016 SP - 53 EP - 61 VL - 3 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCEM_2016_3_3_a5/ LA - en ID - JCEM_2016_3_3_a5 ER -