The report entitled E2E Network Slicing Reference Framework and Information Model has been approved and published in October 2018 by ETSI as a standard specification document. This document is available at – https://www.etsi.org/deliver/etsi_gr/NGP/001_099/011/01.01.01_60/gr_ngp011v010101p.pdf
This work has been contributed by Prof Alex Galis at University College London, one of the participants in the NECOS project