Engle, Scott G., Guinan, Edward F., Harper, Graham M., Neilson, Hilding R., and Evans, Nancy Remage (2014) The secret lives of Cepheids: evolutionary changes and pulsation-induced shock heating in the prototype classical Cepheid δ cep. Astrophysical Journal, 794 (1). pp. 1-15.

Evans, Nancy Remage, Guinan, Edward, Engle, Scott, Wolk, Scott J., Schlegel, Eric, Mason, Brian D., Karovska, Margarita, and Spitzbart, Bradley (2010) Chandra observation of Polaris: census of low-mass companions. Astronomical Journal, 139 (5). pp. 1968-1974.

Engle, Scott G., Guinan, Edward F., DePasquale, Joseph, and Evans, Nancy (2009) The secret XUV lives of Cepheids: FUV/X-ray observations of polaris and beta Dor. In: AIP Conference Proceedings (1135) pp. 192-197. From: 2009 AIP Conference: Future Directions in Ultraviolet Spectroscopy, 20-22 October 2008, Annapolis, MD, USA.