BibTex format
@book{Rommer:2019:10.1016/C2018-0-01335-3,
author = {Rommer, S and Hedman, P and Olsson, M and Frid, L and Sultana, S and Mulligan, C},
doi = {10.1016/C2018-0-01335-3},
title = {5G core networks: Powering digitalization},
url = {http://dx.doi.org/10.1016/C2018-0-01335-3},
year = {2019}
}