Gibson, D. ., S. M. Barr, D. van Rooyen, C. White, and J.-L. Pilote. “Protracted Intra- and Inter-Pluton Magmatism During the Acadian Orogeny: Evidence from New LA-ICP-MS U-Pb Zircon Ages from Northwestern Maine, USA”. Atlantic Geology, vol. 57, no. 1, Mar. 2021, pp. 147-91, doi:10.4138/atlgeol.2021.008.