Measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0 - Aaij, R; Beteta, CA; Adeva, B; Adinolfi, M; Aidala, CA; Ajaltouni, Z; Akar, S; Albicocco, P; Albrecht, J; Alessio, F; Alexander, M; Albero, AA; et al. (Physical Review D: Particles, Fields, Gravitation and Cosmology, 2020)