Development of medical pressure and temperature sensors employing optical spectrum modulation. - Roger A. Wolthuis; Gordon L. Mitchell; Elric Saaski; James C. Hartl; Martin A. Afromowitz (IEEE Trans. Biomed. Eng., 1991)

Development of a medical fiber-optic pH sensor based on optical absorption. - Roger A. Wolthuis; David McCrae; Elric Saaski; James C. Hartl; Gordon Mitchell (IEEE Trans. Biomed. Eng., 1992)

Development of a dual function sensor system for measuring pressure and temperature at the tip of a single optical fiber. - Roger A. Wolthuis; Gordon Mitchell; James C. Hartl; Elric Saaski (IEEE Trans. Biomed. Eng., 1993)