Baskin, C. C., Zackrisson, O., & Baskin, J. M. (2002). Role of warm stratification in promoting germination of seeds of Empetrum hermaphroditum (Empetraceae), a circumboreal species with a stony endocarp. American Journal Of Botany, 89(3), 486-93. https://doi.org/10.3732/ajb.89.3.486