2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43263We present calculations for non-planar double-box with four massless/massive external/internal legs/propagators. The results are expressed for arbitrary exponents of propagators and dimension in terms of Lauricella's hypergeometric functions of three variables and hypergeometric-like multiple series.12 pages, JHEP LATEX style. V2: reference [10] correctedHigh Energy Physics - Phenomenology$ε$-Expansion for non-planar double-boxestext