The fusion of hard and soft Pomerons: 3-jet diffractive productionV. A. Khoze, A. D. Martin, M. G. Ryskin, A. G. Shuvaev and I. V. SurninEur. Phys. J. C, 79 7 (2019) 605DOI: https://doi.org/10.1140/epjc/s10052-019-7120-x