@article{MR_1984_26_a8,
     author = {D. Varsos  and  E. Raptis},
     title = {The automorphism group of {HNN} extensions with finite base group},
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}},
     pages = {95--101},
     year = {1984},
     volume = {26},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1984_26_a8/}
}