Kopera, J. P., Williams, M. L. & Jercinovic, M. J. Age-constraints on fabric reactivation in the Tusas Range, northern New Mexico, using electron-microprobe monazite geochronology; implications for the nature of regional approximately 1400 Ga deformation. Abstracts with Programs - Geological Society of America 34, 180 - 180 (2002).

Kopera, J. P. & Mabee, S. B. A new way of looking at, and mapping, bedrock; the hydrostructural domain map of the Ayer Quadrangle, northeastern Massachusetts. Abstracts with Programs - Geological Society of America 38, 166 - 166 (2006).