Nested soft-collinear subtractions in NNLO QCD computations Fabrizio Caola, Kirill Melnikov and Raoul Röntsch Eur. Phys. J. C, 77 4 (2017) 248 Published online: 18 April 2017 DOI: 10.1140/epjc/s10052-017-4774-0