- Nirjan Biswas, Firoj Sk, “On generalized eigenvalue problems of fractional (p, q)-Laplace operator with two parameters”, Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 2024, 1

- Vladimir Bobkov, Mieko Tanaka, “Abstract multiplicity results for (p, q)-Laplace equations with two parameters”, Rend. Circ. Mat. Palermo, II. Ser, 2024

- Said El Manouni, Kanishka Perera, Patrick Winkert, “On the first eigenvalue of the (p, q)-Laplacian and some related problems”, Math. Z., 310, no. 3, 2025, 46

- Laura Gambera, Umberto Guarnotta, “On Bobkov-Tanaka type spectrum for the double-phase operator”, Advanced Nonlinear Studies, 2025

- Dang Dinh Hai, Xiao Wang, “Uniqueness of positive radial solutions for a class of
(
p
,
q
)
-Laplacian problems in a ball”, Electron. J. Qual. Theory Differ. Equ., no. 34, 2025, 1

- Nirjan Biswas, Laura Gambera, Umberto Guarnotta, “On the linear independence condition for the Bobkov-Tanaka first eigenvalue of the double-phase operator”, Applied Mathematics Letters, 166, 2025, 109549
