Ornelas, M., Diwanji, T., Monterroso, I., Bossart, E., Yechieli, R., Dogan, N., Mellon, E. A. (2021). Assessment of intra-fraction motion during automated linac-based SRS treatment delivery with an open face mask system. In Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) 92, pp. 69–74. DOI: 10.1016/j.ejmp.2021.11.012.