@article{article116e6aff,
title   = {Use of a phase reference for field mapping with amplitude images at low field},
author = {Tomasi, D and Panepucci, Horácio Carlos and Vidoto, Edson Luiz Gea and Azevêdo, Eduardo Ribeiro de},
year = {1998},
journal   = {Journal of Magnetic Resonance}
}