ANOOP, Thazhe Veetil and BISWAS, Nirjan. On global bifurcation for the nonlinear Steklov problems. Topological Methods in Nonlinear Analysis. Online. 5 December 2021. Vol. 58, no. 2, pp. 731 - 763. [Accessed 26 April 2025]. DOI 10.12775/TMNA.2020.080.