1. Asma BM, Birhanli O (2003) Selection studies of wild growing hawthorns around Malatya. IV. Turkish National Horticultural Symposium, 08–12 September, Antalya, pp 61–62
2. Balta MF, Celik F, Turkoglu N, Ozrenk K, Ozgokce F (2006) Some fruit traits of hawthorn (Crataegus spp.) genetic resources from Malatya, Turkey. Res J Agric Biol Sci 2:531–536
3. Baytop T (1984) Treatment with plants in Turkey, vol 6. Istanbul University, Publication No. 3255, Istanbul, pp 27–33
4. Christensen KI (1992) Revision of Crataegus Sect. Crataegus and Nothosect. Crataeguineae (Rosaceae-Maloideae) in the Old World. Systematic Botany Monographs 35. The American Society of Plant Taxonomists, Ann Arbor
5. Coart E, Vekemans X, Smudlers MJM, Wagner I, van Huylenbroeck J, van Bockstaele E, Roldan-Ruiz I (2003) Genetic variation in the endangered wild apple (Malus sylvestris (L.) Mill.) in Belgium as revealed by amplified fragment length polymorphism and microsatellite markers. Mol Ecol 12:845–857