A global continuation theorem for obtaining eigenvalues and bifurcation points
A new method for obtaining eigenvalues of variational inequalities based on bifurcation theory
A remark on the bifurcation diagrams of superlinear elliptic equations
We prove a formula relating the index of a solution and the rotation number of a certain complex vector along bifurcation diagrams.
An abstract differential equation and the potential bifurcation theorems by Krasnosel'skij
An abstract differential inequality and eigenvalues of variational inequalities