@article{IM_1994__117_1_144212,
     author = {Michael Gromov and Mikhail A. Shubin},
     title = {The {Riemann-Roch} theorem for elliptic operators and solvability of elliptic equations with addititonal conditions on compact subsets.},
     journal = {Inventiones mathematicae},
     pages = {165--180},
     publisher = {mathdoc},
     volume = {117},
     number = {1},
     year = {1994},
     zbl = {0822.58046},
     url = {http://geodesic.mathdoc.fr/item/IM_1994__117_1_144212/}
}