@article{MR_1997__47_a4,
     author = {L. I. Karandjulov and  Y. P. Stoyanova},
     title = {Boundary {Value} {Problem} for {Nonlinear} {Singularity} perturbed {Systems} in {Critical} case of {Exchange} of {Stability}},
     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 = {91-116},
     publisher = {mathdoc},
     volume = {47},
     year = {1997},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1997__47_a4/}
}