Olkhovska, A., V. Malyi, and I. Storozhenko. “Substantiation for the Optimal Strategy of Risk Management in Marketing Communicative Activities of Pharmaceutical Enterprises Based on Mathematical Model Approach”. ScienceRise: Pharmaceutical Science, no. 5 (15), Nov. 2018, pp. 24-31, doi:10.15587/2519-4852.2018.146479.