TY - RPRT TI - Identifying Heterogeneities in Subsurface Environment using the Level Set Method AU - Lei, Hongzhuan AU - Lu, Zhiming AU - Vesselinov, Velimir Valentinov PY - 2016 DO - 10.2172/1312562 UR - https://www.osti.gov/biblio/1312562 ID - 1312562 ER -