Authors
Dagnija Lazdiņa
Latvian State Forest Research Institute, Latvia
Daina Feldmane
MZI-APP Institute of Horticulture, Latvia
Dace Treigute
Latvian State Forest Research Institute, Latvia
Uldis Daugavietis
Latvian State Forest Research Institute, Latvia
Santa Celma
Latvian State Forest Research Institute, Latvia
Austra Zuševica
Latvian State Forest Research Institute, Latvia