1. Ahmadloo F, Tabari M, Azadi P, Hamidi A (2014) Effect of plant growth promoting rhizobacteria (PGPRs) and stratification on germination traits of Crataegus pseudoheterophylla Pojark. seeds. Sci Hortic 172(2):61–67. doi: 10.1016/j.scienta.2014.03.049
2. Baskin CC, Baskin JM (1998) Seeds: ecology, biogeography, and evolution of dormancy and germination. Academic press, San Diego
3. Baskin JM, Baskin CC (2000) Evolutionary considerations of claims for physical dormancy break by microbial action and abrasion by soil particles. Seed Sci Res 10(4):409–413. doi: 10.1017/S0960258500000453
4. Baskin CC, Baskin JM (2001) Seeds: ecology, biogeography, and evolution of dormancy and germination. Academic press, San Diego
5. Baskin CC, Baskin JM (2008) Advances in understanding seed dormancy at the whole-seed level: an ecological, biogeographical and phylogenetic perspective. Acta Bot Yunnanica 30(3):279–294. doi: 10.3724/SP.J.1143.2008.08017