Validation of ACB in vitro and in vivo as a biomagnetic method for measuring stomach contraction - Américo, M. F.; Marques, R. G.; Zandoná, E. A.; Andreis, U.; Stelzer, M.; Corá, L. A.; Oliveira, Ricardo Brandt de; Miranda , J. R. A. (Neurogastroenterology and Motility, 2010)