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. The Nashoba Terrane: A new tectonostratigraphy and shared structural styles with the Merrimack belt in Massachusetts. Geological Society of America Abstracts with Programs 47, 42 (2015).

Kopera, J. P. & Massey, M. A. A structural framework for the Nashoba Terrane in eastern Massachusetts. Abstracts with Programs - Geological Society of America 45, 107 (2013).