- Comparison between equivalent circuit diagrams and fractional rational functions in the frequency domain for Lithium-ion battery modelingRahmoun, Ahmad; Biechl, Helmuth; Rosin, Argo13th International Symposium "Topical Problems in the Field of Electrical and Power Engineering." Doctoral School of Energy and Geotechnology II : Pärnu, Estonia, January 14-19, 20132013 / p. 55-58 : ill