Ruffell, A; Shelton, R (July 1999). "The control of sedimentary facies by climate during phases of crustal extension: examples from the Triassic of onshore and offshore England and Northern Ireland". Journal of the Geological Society. 156: 779. Bibcode:1999JGSoc.156..779R. doi:10.1144/gsjgs.156.4.0779.
Ruffell, A; Shelton, R (July 1999). "The control of sedimentary facies by climate during phases of crustal extension: examples from the Triassic of onshore and offshore England and Northern Ireland". Journal of the Geological Society. 156: 779. Bibcode:1999JGSoc.156..779R. doi:10.1144/gsjgs.156.4.0779.