@article{10_1017_S0017089519000053,
     author = {GABE, JAMES and RUIZ, EFREN},
     title = {THE {UNITAL} {EXT-GROUPS} {AND} {CLASSIFICATION} {OF} {C*-ALGEBRAS}},
     journal = {Glasgow mathematical journal},
     pages = {201--231},
     year = {2020},
     volume = {62},
     number = {1},
     doi = {10.1017/S0017089519000053},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089519000053/}
}