@article{Ukhina2017travel,
author={Ukhina, T.V. and Shabakov, A.A. and Snegova, K.V. and Kul’beikin, A.S.},
title={Travel agencies in competition with modern online-booking services},
journal={Servis Plus},
publisher={Russian State University of Tourism and Service},
year={2017},
pages={30-36},
volume={11},
issue={2},
}