@article{10_4171_dm_620,
     author = {Ilija Tolich and Astrid an Huef and Iain Raeburn},
     title = {HNN {Extensions} of {Quasi-Lattice} {Ordered} {Groups} and their {Operator} {Algebras}},
     journal = {Documenta mathematica},
     pages = {327--351},
     year = {2018},
     volume = {23},
     doi = {10.4171/dm/620},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/620/}
}