by Kyhl, R.L., Webster, H.F.
Published in I.R.E. transactions on electron devices (01.10.1956)

by Kyhl, R.L.
Published in I.R.E. transactions on microwave theory and techniques (01.04.1956)

by Glasser, L.A., Kyhl, R.L.
Published in IEEE transactions on electron devices (01.06.1979)

by Stock, D.J.R., Kyhl, R.L., Kaplan, L.J.
Published in I.R.E. transactions on microwave theory and techniques (01.11.1960)