@article{DAN_1969_184_5_a9,
     author = {Z. I. Khalilov and B. N. Panaioti},
     title = {The minimization of a quadratic functional generated by a linear operator in normed spaces},
     journal = {Doklady Akademii Nauk},
     pages = {1054--1056},
     publisher = {mathdoc},
     volume = {184},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_5_a9/}
}