The minimum energetical principle in electric and magnetic circuits. - Horia Andrei; Fanica Spinei (ECCTD, 2007)

Evaluation of hilbert space techniques and lagrange's method for the analysis of dissipated power in DC circuits. - Horia Andrei; Fanica Spinei; Paul Andrei; Ulrich L. Rohde; Marius Alexandru Silaghi; Helga Maria Silaghi (ECCTD, 2009)