@article{RM_1993_48_4_a10,
     author = {V. Ya. Yakubov},
     title = {Attainability of sharp estimates, and a~different order of growth of normalized vector-valued eigenfunctions of spectral boundary-value problems for systems of {Dirac} type},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {254--255},
     publisher = {mathdoc},
     volume = {48},
     number = {4},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_4_a10/}
}