Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NISHI T,A transistor circuit can possess infinitely many solutions under the assumption that the first and the second derivatives of the v-i curves of nonlinear resistors are positive,"Proc. ISCAS '96, Atlanta",,,1996,,,,https://cir.nii.ac.jp/crid/1572543025710237312,