S.R. Manchester m.fl. (2009). «Eastern Asian endemic seed plant genera and their paleogeographic history throughout the Northern Hemisphere». Journal of Systematics and Evolution. 47 (1): 1–42. ISSN1759-6831. doi:10.1111/j.1759-6831.2009.00001.x.
Takeshi Saito, Wei-Ming Wang og Tomio Nakagawa (2000). «Cathaya (Pinaceae) pollen from Mio-Pliocene sediments in the Himi area, central Japan». Grana. 39 (6): 288–293. ISSN1651-2049. doi:10.1080/00173130052504324.
Paolo Corrado og Donatella Magri (2011). «A late Early Pleistocene pollen record from Fontana Ranuccio (central Italy)». Journal of Quaternary Science. 26 (3): 335–344. Bibcode:2011JQS....26..335C. ISSN1099-1417. doi:10.1002/jqs.1459.
Paolo Corrado og Donatella Magri (2011). «A late Early Pleistocene pollen record from Fontana Ranuccio (central Italy)». Journal of Quaternary Science. 26 (3): 335–344. Bibcode:2011JQS....26..335C. ISSN1099-1417. doi:10.1002/jqs.1459.
S.R. Manchester m.fl. (2009). «Eastern Asian endemic seed plant genera and their paleogeographic history throughout the Northern Hemisphere». Journal of Systematics and Evolution. 47 (1): 1–42. ISSN1759-6831. doi:10.1111/j.1759-6831.2009.00001.x.
Takeshi Saito, Wei-Ming Wang og Tomio Nakagawa (2000). «Cathaya (Pinaceae) pollen from Mio-Pliocene sediments in the Himi area, central Japan». Grana. 39 (6): 288–293. ISSN1651-2049. doi:10.1080/00173130052504324.
Paolo Corrado og Donatella Magri (2011). «A late Early Pleistocene pollen record from Fontana Ranuccio (central Italy)». Journal of Quaternary Science. 26 (3): 335–344. Bibcode:2011JQS....26..335C. ISSN1099-1417. doi:10.1002/jqs.1459.