@article{DE_2006_42_6_a5,
     author = {M. V. Falaleev and E. Yu. Grazhdantseva},
     title = {Fundamental operator functions of singular differential operators under spectral boundedness conditions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {769--774},
     publisher = {mathdoc},
     volume = {42},
     number = {6},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_6_a5/}
}