Kosmala, Sylwia; Bereza, Magdalena; Milanowski, Rafał; Kwiatowski, Jan; Zakryś, Bożena (2007-10-01). "Morphological and molecular examination of relationships and epitype establishment of Phacus pleuronectes, Phacus orbicularis, and Phacus hamelii1". Journal of Phycology. 43 (5): 1071–1082. Bibcode:2007JPcgy..43.1071K. doi:10.1111/j.1529-8817.2007.00386.x. ISSN1529-8817. S2CID85569422.
Kim, Jun Tae; Boo, S. M.; Zakrys, B. (2000). "Contribution to the knowledge of the genus Phacus Dujardin 1841 (Euglenophyceae) in Korea". Nova Hedwigia. 71 (1–2): 37–68. doi:10.1127/nova/71/2000/37. S2CID81548264.
Pereira, Mário Jorge; Azeiteiro, Ulisses M.M (2003). "Ecological notes on the species of Phacus Dujardin (Euglenophyta) from the central region of Portugal". Acta Oecologica. 24: S33 –S48. Bibcode:2003AcO....24S..33P. doi:10.1016/s1146-609x(03)00006-7.
Bradley, W. H. (1929). "Fresh water algae from the Green River Formation of Colorado". Bulletin of the Torrey Botanical Club. 56 (8): 421–428. doi:10.2307/2480453. JSTOR2480453.
Kosmala, Sylwia; Bereza, Magdalena; Milanowski, Rafał; Kwiatowski, Jan; Zakryś, Bożena (2007-10-01). "Morphological and molecular examination of relationships and epitype establishment of Phacus pleuronectes, Phacus orbicularis, and Phacus hamelii1". Journal of Phycology. 43 (5): 1071–1082. Bibcode:2007JPcgy..43.1071K. doi:10.1111/j.1529-8817.2007.00386.x. ISSN1529-8817. S2CID85569422.
Pereira, Mário Jorge; Azeiteiro, Ulisses M.M (2003). "Ecological notes on the species of Phacus Dujardin (Euglenophyta) from the central region of Portugal". Acta Oecologica. 24: S33 –S48. Bibcode:2003AcO....24S..33P. doi:10.1016/s1146-609x(03)00006-7.
Bradley, W. H. (1929). "Fresh water algae from the Green River Formation of Colorado". Bulletin of the Torrey Botanical Club. 56 (8): 421–428. doi:10.2307/2480453. JSTOR2480453.
Kosmala, Sylwia; Bereza, Magdalena; Milanowski, Rafał; Kwiatowski, Jan; Zakryś, Bożena (2007-10-01). "Morphological and molecular examination of relationships and epitype establishment of Phacus pleuronectes, Phacus orbicularis, and Phacus hamelii1". Journal of Phycology. 43 (5): 1071–1082. Bibcode:2007JPcgy..43.1071K. doi:10.1111/j.1529-8817.2007.00386.x. ISSN1529-8817. S2CID85569422.
Kim, Jun Tae; Boo, S. M.; Zakrys, B. (2000). "Contribution to the knowledge of the genus Phacus Dujardin 1841 (Euglenophyceae) in Korea". Nova Hedwigia. 71 (1–2): 37–68. doi:10.1127/nova/71/2000/37. S2CID81548264.