Nullator-norator approach to analogue circuit diagnosis using general-purpose analysis programmes. - Samuil L. Farchy; Elisaveta D. Gadzheva; Lyudmila H. Raykovska; Todor G. Kouyoumdjiev (Int. J. Circuit Theory Appl., 1995)

Fault identification in analog-discrete circuits using general-purpose analysis programs. - Samuil L. Farchy; Elissaveta Gadjeva; Todor G. Kouyoumdjiev (ICECS, 1998)