@article{EJDE_2016__2016__a1,
     author = {\c{S}en,  Erdo\u{g}an and Bayramov,  Azad and Oru\c{c}o\u{g}lu,  Kamil},
     title = {Regularized trace formula for higher order differential operators with unbounded coefficients},
     journal = {Electronic journal of differential equations},
     year = {2016},
     volume = {2016},
     zbl = {1330.47055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2016__2016__a1/}
}