1. L.C. Martin, G.C. Fralick, K.F. Taylor, NASA TM-208812 (1999)
2. L.C. Martin, J.D. Wrbanek, G.C. Fralick, NASA TM-211149 (2001)
3. J.D. Wrbanek, G.C. Fralick, S.C. Farmer, A. Sayir, C.A. Blaha, J.M. Gonzalez, NASA TM-213211 (2004)
4. D. Burgess, M. Yust, K.G. Kreider, Sens. Actuators A 34, 95 (1990)
5. K.G. Kreider, G. Gillen, Thin Solid Films 376, 32 (2000)