@inproceedings{inproceedingsbefa76c5,
title   = {The non-fiducial approach applied to GPS networks},
author = {Monico, João Francisco Galera and Fonseca Júnior, Edvaldo Simões da and Blitzkow, Denizar},
year = {1997},
publisher = {IAG},
booktitle   = {Congresso Brasileiro de Cartografia}
}