Pound, Matthew J.; Riding, James B.; Donders, Timme H.; Daskova, Jirina (June 2012). "The palynostratigraphy of the Brassington Formation (Upper Miocene) of the southern Pennines, central England". Palynology. 36 (1): 26–37. doi:10.1080/01916122.2011.643066. S2CID129857989.
Pound, Matthew J.; Riding, James B.; Donders, Timme H.; Daskova, Jirina (June 2012). "The palynostratigraphy of the Brassington Formation (Upper Miocene) of the southern Pennines, central England". Palynology. 36 (1): 26–37. doi:10.1080/01916122.2011.643066. S2CID129857989.