Michael Bashkin; Thomas J Stohlgren; Yuka Otsuki; Michelle Lee; Paul Evangelista; Jayne Belnap. (2003). Soil characteristics and plant exotic species invasions in the Grand Staircase—Escalante National Monument, Utah, USA. , 22(1), 0–77.
doi:10.1016/s0929-1393(02)00108-7
