Bubenchikov MikhailAlekseevich, Sherstobitov Alexandr Anatolyevich, Potekaev Alexandr Ivanovich, Bubenchikov Alexey Mikhailovich, Usenko Olesya Vadimovna «Permeability of the tunnel of spherical nanoparticles» // Tomsk State University Journal of Mathematics and Mechanics 2014. №5(31) C.69-75