Ali A. Dönmez, « Taxonomic notes on the genus Crataegus (Rosaceae) in Turkey », Botanical Journal of the Linnean Society, vol. 155, no 2, , p. 231–240 (ISSN0024-4074, DOI10.1111/j.1095-8339.2007.00682.x)
Knud Ib Christensen et Jerzy Zieliński, « Notes on the genus Crataegus (Rosaceae-Pyreae) in southern Europe, the Crimea and western Asia », Nordic Journal of Botany, vol. 26, nos 5-6, , p. 344–360 (ISSN0107-055X, DOI10.1111/j.1756-1051.2008.00330.x)
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Ali A. Dönmez, « Taxonomic notes on the genus Crataegus (Rosaceae) in Turkey », Botanical Journal of the Linnean Society, vol. 155, no 2, , p. 231–240 (ISSN0024-4074, DOI10.1111/j.1095-8339.2007.00682.x)
Knud Ib Christensen et Jerzy Zieliński, « Notes on the genus Crataegus (Rosaceae-Pyreae) in southern Europe, the Crimea and western Asia », Nordic Journal of Botany, vol. 26, nos 5-6, , p. 344–360 (ISSN0107-055X, DOI10.1111/j.1756-1051.2008.00330.x)