@Article{Rădulescu2019,
author = "Rădulescu, Vicenţiu D.",
title = "Isotropic and anisotropic double-phase problems: old and new",
journal = "Opuscula Math.",
year = "2019",
volume = "39",
number = "2",
pages = "259--279",
doi = "https://doi.org/10.7494/OpMath.2019.39.2.259",
url = "https://doi.org/10.7494/OpMath.2019.39.2.259",
abstract = "We are concerned with the study of two classes of nonlinear problems driven by differential operators with unbalanced growth, which generalize the \((p,q)\)- and \((p(x),q(x))\)-Laplace operators. The associated energy is a double-phase functional, either isotropic or anisotropic. The content of this paper is in relationship with pioneering contributions due to P. Marcellini and G. Mingione.",
keywords = "differential operator with unbalanced growth, double-phase energy, variable exponent",
issn = "1232-9274"
}