Kopera, J. P., P. House, K., Schmidt, M. & Clark, R. Guiding principles for use of digital technology in geologic data collection and distribution. Abstracts with Programs - Geological Society of America 46, 75 - 75 (2014).

Kopera, J. P., Mabee, S. B., Salamoff, S. A. & Hildreth, C. An update of geologic mapping in Massachusetts. Abstracts with Programs - Geological Society of America 36, 58 - 58 (2004).