@article{article29e93220,
title   = {Measurement of the first Townsend ionization coefficient in a methane-based tissue-equivalent gas},
author = {Petri, Alice Dias and Gonçalves, J A C and Mangiarotti, Alessio and Botelho, Suzana and Bueno, C C},
year = {2017},
doi = {10.1016/j.nima.2017.01.007},
journal   = {Nuclear Instruments and Methods in Physics Research A}
}