@article{Bartkevicius_1999, title={Periodic time-domain analysis based on approximation by splines and harmonic balance}, volume={23}, url={https://eejournal.ktu.lt/index.php/elt/article/view/16726}, abstractNote={<span>A periodic solution of non-linear system represented by cubic spline may be expressed by a finite harmonic row exactly representing nodes of the spline. The differentiation operation on this row is replaced by multiplication by special matrix. New representation of a periodic solution allowing direct differentiation is proposed.</span>}, number={5}, journal={Elektronika ir Elektrotechnika}, author={Bartkevicius, S.}, year={1999}, month={Oct.} }