@article{articlec0861fb2,
title   = {Estimating granite roughness using systematic random sampling for the evaluation of radon gas emanation from ornamental granite rocks},
author = {El Hajj, Thammiris Mohamad and Tertuliano, Iramar da Silva and Vieira, Tiago and Chieregati, Ana Carolina and Delboni Júnior, Homero},
year = {2015},
doi = {10.1255/tosf.52},
journal   = {TOS Forum}
}