V. Ya. Yakubov, “Differential equations whose solution of the Cauchy problem displays nonclassical behaviour with respect to the parameter $\lambda$”, Mat. Sb., 200:10 (2009), 151–160; Sb. Math., 200:10 (2009), 1565–1574
1999
2.
V. Ya. Yakubov, “Estimates for Eigenfunctions of Elliptic Operators with Respect to the Spectral Parameter”, Funktsional. Anal. i Prilozhen., 33:2 (1999), 58–67; Funct. Anal. Appl., 33:2 (1999), 128–136
V. Ya. Yakubov, “Estimates for solutions of Cauchy problems involving a spectral parameter”, Differ. Uravn., 34:1 (1998), 59–63; Differ. Equ., 34:1 (1998), 59–64
V. Ya. Yakubov, “Reconstruction of a Sturm–Liouville equation with an integrable weight”, Uspekhi Mat. Nauk, 51:4(310) (1996), 175–176; Russian Math. Surveys, 51:4 (1996), 758–759
1994
5.
V. Ya. Yakubov, “Boundedness of normalized eigenfunctions for the Sturm–Liouville problem with minimal constraints on the smoothness of the coefficients”, Differ. Uravn., 30:8 (1994), 1465–1467; Differ. Equ., 30:8 (1994), 1361–1364
V. Ya. Yakubov, “Sharp estimates for $L_2$-normalized eigenfunctions of an
elliptic operator”, Dokl. Akad. Nauk, 331:3 (1993), 286–287; Dokl. Math., 48:1 (1994), 92–94
V. Ya. Yakubov, “Sharp estimates for normalized eigenfunctions of the Sturm–Liouville problem”, Dokl. Akad. Nauk, 331:2 (1993), 148–149; Dokl. Math., 48:1 (1994), 52–55
8.
V. Ya. Yakubov, “Different orders of growth of normalized eigenfunctions of the Sturm–Liouville problem with continuous weight”, Differ. Uravn., 29:6 (1993), 982–989; Differ. Equ., 29:6 (1993), 841–848
V. Ya. Yakubov, “A Dirac-type system with variable coefficients”, Differ. Uravn., 29:1 (1993), 156–164; Differ. Equ., 29:1 (1993), 132–138
10.
V. Ya. Yakubov, “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”, Uspekhi Mat. Nauk, 48:4(292) (1993), 227–228; Russian Math. Surveys, 48:4 (1993), 254–255
11.
V. Ya. Yakubov, “Nonclassical two-sided sharp estimates for normalized eigenfunctions of the Sturm–Liouville problem”, Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1993, no. 4, 37–44
V. Ya. Yakubov, “A nonselfadjoint irregular elliptic spectral partial differential boundary value problem”, Differ. Uravn., 19:10 (1983), 1777–1785
15.
M. M. Gekhtman, Yu. M. Zagiriv, V. Ya. Yakubov, “Asymptotic behavior of eigenfunctions of the Sturm–Liouville spectral problem”, Funktsional. Anal. i Prilozhen., 17:3 (1983), 71–72; Funct. Anal. Appl., 17:3 (1983), 221–223