%0 Journal Article %A M. R. Bahrami %T Non-contact atomic force microscope: Modeling and simulation using van der pol averaging method %J Izvestiya VUZ. Applied Nonlinear Dynamics %D 2021 %P 345-355 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVP_2021_29_3_a1/ %G en %F IVP_2021_29_3_a1