Factorisation breaking in diffractive dijet photoproduction at HERA A. B. Kaidalov, V. A. Khoze, A. D. Martin and M. G. Ryskin Eur. Phys. J. C, 66 3-4 (2010) 373-376 Published online: 19 February 2010 DOI: 10.1140/epjc/s10052-010-1260-3