GRYGORENKO О., and PIATNYTSKA Г. “ew pproaches to the etermination of roducts ompetitiveness in the estaurant rade nterprises”. NTERNATIONAL CIENTIFIC-RACTICAL OURNAL OMMODITIES ND ARKETS, vol. 9, no. 1, June 2010, pp. 98-106, https://journals.knute.edu.ua/commodities-and-markets/article/view/1531.