R.J. Von Gutfeld, J.R. Lankard
Opto-electronics
Results of heat-pulse measurements between 4 and 54°K are reported for sapphire and show that the propagation is ballistic below 18°K and diffusive above 40°K. In the intermediate range, the propagation is a superposition of the two. © 1966 The American Physical Society.
R.J. Von Gutfeld, J.R. Lankard
Opto-electronics
R.J. Von Gutfeld, D.R. Vigliotti, et al.
CLEO 1984
Charles Weiss Jr., Kenneth T. Solnit, et al.
BBA - Bioenergetics
R.J. Von Gutfeld
Optics and Laser Technology