@article{RM_1991_46_5_a4,
     author = {K. Kh. Boimatov},
     title = {The spectral asymptotics of pseudodifferential systems elliptic in the sense of {Douglis} and {Nirenberg}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {183--184},
     publisher = {mathdoc},
     volume = {46},
     number = {5},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1991_46_5_a4/}
}