@article{Afanasev2014video-excursion,
author={Afanasev, O.E. and Trotsenko, A..},
title={Video-excursion expert evaluation methodology in guide training},
journal={Universities for Tourism and Service Association Bulletin},
publisher={Russian State University of Tourism and Service},
year={2014},
pages={86-94},
volume={8},
issue={3},
}