@article{GFA_1996__6_1_58230,
     author = {M.A. Shubin},
     title = {Semiclassical {Asymptotics} on {Covering} {Manifolds} and {Morse} {Inequalities.}},
     journal = {Geometric and functional analysis},
     pages = {370--410},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1996},
     zbl = {0861.58039},
     url = {http://geodesic.mathdoc.fr/item/GFA_1996__6_1_58230/}
}