found: His Oscillator design and computer simulation, 1990:CIP t.p. (Randall W. Rhea)
found: HF filter design and computer simulation, c1994:CIP t.p. (Randall W. Rhea; founder & pres. Eagleware Corp.) data sheet (b. June 10, 1947)
found: Practical filter and couplers, 2001:CIP t.p. (Randy Rhea)
found: Eagleware-Elanix, Management team Web site, May 24, 2005(Randy Rhea; founder and chairman; founded Eagleware Corporation in 1985; graduate of the University of Illinois and Arizona State University)