Cartwright, S. F., D. P. West, Jr., and W. H. Amidon. “Depositional Constraints from Detrital Zircon Geochronology of Strata from Multiple Lithotectonic Belts in South-Central Maine, USA”. Atlantic Geoscience, vol. 55, Apr. 2019, pp. 093-36, doi:10.4138/atlgeol.2019.003.