Hakansson I., Lipiec J.:
A review of the usefulness of relative bulk density values in studies of soil structure and compaction. (2000 r.)
Soil & Tillage Research
2000, 53, 71-85
Lipiec J., Hakansson I.:
Influences of degree of compactness and matric water tension on some important plant growth factors. (2000 r.)
Soil & Tillage Research
2000, 53, 87-94
Hakansson I., Lipiec J.:
Influences of degree of compactness and matric water tension on some important plant growth factors. (1997 r.)
Bibliotheca Fragmenta Agronomica
1997, 2A/97, 251-254