Visser, Richard G. F.; Dick Vreugdenhil; Theo Hendriks; Evert Jacobsen (februar 1994). „Gene expression and carbohydrate content during stolon to tuber transition in potatoes (Solanum tuberosum)”. Physiologia Plantarum. 90 (2): 285—92. S2CID86752575. doi:10.1111/j.1399-3054.1994.tb00389.x.
Visser, Richard G. F.; Dick Vreugdenhil; Theo Hendriks; Evert Jacobsen (februar 1994). „Gene expression and carbohydrate content during stolon to tuber transition in potatoes (Solanum tuberosum)”. Physiologia Plantarum. 90 (2): 285—92. S2CID86752575. doi:10.1111/j.1399-3054.1994.tb00389.x.