GE, Bin, HAN, Yuhang, CAO, Qinghai and REN, Haixin. A class of double phase problem without Ambrosetti-Rabinowitz-type growth condition: infinitely many solutions. Topological Methods in Nonlinear Analysis. Online. 16 June 2024. Vol. 63, no. 2, pp. 733 - 748. [Accessed 9 March 2025]. DOI 10.12775/TMNA.2023.040.