1. G. Dai, X. Han and R. Ma, Unilateral global bifurcation and nodal solutions for the p-Laplacian with sign-changing weight, Complex Variables and Elliptic Equations, 2014, 59(6), 847–862.
2. G. Dai, J. Yao and F. Li, Spectrum and bifurcation for semilinear elliptic problems in ${{\mathbb{R}}^{N}}$, J. Differential Equations, 2017, 263(9), 5939–5967.
3. E. N. Dancer, On the structure of solutions of non-linear eigenvalue problems, Indiana Univ. Math. J., 1974, 23(11), 1069–1076.
4. A. L. Edelson and M. Furi, Global solution branches for semilinear equations in ${{\mathbb{R}}^{n}}$, Nonlinear Anal., 1997, 28(9), 1521–1532.
5. A. L. Edelson, A. J. Rumbos, Linear and semilinear eigenvalue problems in ${{\mathbb{R}}^{n}}$, Comm. Partial Differential Equations, 1993, 18(1–2), 215–240.