Середа Наталія Віталіївна (Nataliiya S. 2015. Analysis of the influence of marketing environment factors on the development of non-Olympic sports in sports schools (on the example of sports tourism). Slobozhanskyi Herald of Science and Sport. 3(47) (Jun. 2015), 111–114. DOI:https://doi.org/10.15391/snsv.2015-3.021.