Nekrylov S.A. «The organization and financing of scientific of excursions and expeditions through out Siberia in the emperorTomsk university (1885 -the February of 1917)» // 2009. №318 C.117-124
Kapilevich Leonid V., Karvunis Yulia A. «Recreational and sightseeing potential of walks by bikes in the city» // 2013. №370 C.140-143
