@article{IM2_1970_4_6_a8,
     author = {V. M. Veselov},
     title = {On properties of bases after their orthogonalization},
     journal = {Izvestiya. Mathematics},
     pages = {1429--1446},
     year = {1970},
     volume = {4},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_6_a8/}
}