An analog multiplier using thyrite. - Ladis D. Kovach; William Comley (Trans. I R E Prof. Group Electron. Comput., 1954)

Nonlinear Transfer Functions with Thyrite. - Ladis D. Kovach; William Comley (IRE Trans. Electron. Comput., 1958)

A New, Solid-State, Nonlinear Analog Component. - Ladis D. Kovach; William Comley (IRE Trans. Electron. Comput., 1960)