The fusion of hard and soft Pomerons: 3-jet diffractive production V. A. Khoze, A. D. Martin, M. G. Ryskin, A. G. Shuvaev and I. V. Surnin Eur. Phys. J. C, 79 7 (2019) 605 Published online: 18 July 2019 DOI: 10.1140/epjc/s10052-019-7120-x