D. A. Koers
- Aerobic sludge digestion—a suggested design procedure. Dans: Canadian Journal of Civil Engineering / Revue canadienne de génie civil, v. 8, n. 1 (mars 1981). (1981):
- Aerobic sludge digestion at cold temperatures. Dans: Canadian Journal of Civil Engineering / Revue canadienne de génie civil, v. 4, n. 4 (décembre 1977). (1977):