Ritz, C.M. .; Fickenscher, K.; Föller, J.; Herrmann, K.; Mecklenburg, R.; Wahl, R. (2016). "Molecular phylogenetic relationships of the Andean genus Aylostera Speg. (Cactaceae, Trichocereeae), a new classification and a morphological identification key". Plant Systematics and Evolution. 302 (7): 763–780. Bibcode:2016PSyEv.302..763R. doi:10.1007/s00606-016-1296-4. S2CID16873446.
harvard.edu
ui.adsabs.harvard.edu
Ritz, C.M. .; Fickenscher, K.; Föller, J.; Herrmann, K.; Mecklenburg, R.; Wahl, R. (2016). "Molecular phylogenetic relationships of the Andean genus Aylostera Speg. (Cactaceae, Trichocereeae), a new classification and a morphological identification key". Plant Systematics and Evolution. 302 (7): 763–780. Bibcode:2016PSyEv.302..763R. doi:10.1007/s00606-016-1296-4. S2CID16873446.
Ritz, C.M. .; Fickenscher, K.; Föller, J.; Herrmann, K.; Mecklenburg, R.; Wahl, R. (2016). "Molecular phylogenetic relationships of the Andean genus Aylostera Speg. (Cactaceae, Trichocereeae), a new classification and a morphological identification key". Plant Systematics and Evolution. 302 (7): 763–780. Bibcode:2016PSyEv.302..763R. doi:10.1007/s00606-016-1296-4. S2CID16873446.