@article{MABA_1990_4_2_a5,
     author = {Georgi E. Karadzhov},
     title = {Uniform {Semi-Classical} {Asymptotics} of the {Spectral} {Function} for {Schreudinger} {Operators} and {Periodic} {Bicharacteristics}},
     journal = {Mathematica balkanica},
     pages = {173},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1990},
     url = {http://geodesic.mathdoc.fr/item/MABA_1990_4_2_a5/}
}