Doerr, S., Llewellyn, C. T., Doerr, S. H., Douglas, P., Morley, C. P., & Mainwaring, K. A. (2004). Soxhlet extraction of organic compounds associated with soil water repellency. Environmental Chemistry Letters, 2(1), pp. 41-44. doi:10.1007/s10311-004-0069-4

Doerr, Stefan, C. T. Llewellyn, S. H. Doerr, P. Douglas, C. P. Morley, and K. A. Mainwaring. "Soxhlet Extraction of Organic Compounds Associated With Soil Water Repellency." Environmental Chemistry Letters 2, no. 1 (2004): 41-44.

Doerr, Stefan, et al. "Soxhlet Extraction of Organic Compounds Associated With Soil Water Repellency." Environmental Chemistry Letters 2.1 (2004): 41-44.