1. Wheel traffic considerations in erosion research;Voorhees;Trans ASAE,1979
2. Soil compaction on heavily used sites;Craul;J Arboricult,1994
3. Effects of subsoil compaction on corn yields;Gaultney;Trans ASAE,1982
4. The nature and properties of soils;Brady,1974
5. ASAE Standards 4E. S313.2: soil cone penetrometer. St. Joseph (MI): ASAE; 1999. p. 808–9