Germain, 2004. FAO regional office for Europe interregional FAO-CIHEAM network on nuts (ESCORENA), FAO Technical Series 66, FAO, Rome

Germain, E., 2004. Inventory of walnut research, germplasm and references. FAO regional office for Europe interregional FAO-CIHEAM network on nuts (ESCORENA), FAO Technical Series 66, FAO, Rome