@article{ZNSL_2000_268_a11,
     author = {G. V. Savinov},
     title = {Two-sided bounds of the smallest eigenvalue of a positive-definite matrix in the presence of restrictions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {181--184},
     year = {2000},
     volume = {268},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_268_a11/}
}