Articles in Scholarly Journals [Incomplete List]

1. Multiple positive and 2-nodal symmetric solutions of elliptic problems with critical nonlinearity☆
   Journal of Differential Equations, vol. 237, no. 1, pp. 133–158, 2007
2. Sign changing solutions of semilinear elliptic problems in exterior domains
   Calculus of Variations and Partial Differential Equations, vol. 30, no. 3, pp. 353–367, 2007
3. Configuration spaces, transfer, and 2-nodal solutions of a semiclassical nonlinear Schrödinger equation
   Mathematische Annalen, vol. 338, no. 1, pp. 147–185, 2007
4. Proceedings of the American Mathematical Society, vol. 134, no. 01, pp. 167–176, 2006
5. Multiple Solutions of Nonlinear Scalar Field Equations
   Communications in Partial Differential Equations, vol. 29, no. 9&10, pp. 1533–1554, 2004
6. Minimal nodal solutions of the pure critical exponent problem on a symmetric domain
   Calculus of Variations, vol. 21, no. 1, 2004
7. Positive solutions of a Schrödinger equation with critical nonlinearity
   Zeitschrift für angewandte Mathematik und Physik, vol. 55, no. 4, 2004
8. Multiple solutions for a non-homogeneous elliptic equation at the critical exponent
   Proceedings of the Royal Society of Edinburgh: Section A Mathematics, vol. 134, no. 01, p. 69, 2004
9. The effect of the domain topology on the number of minimal nodal solutions of an elliptic equation at critical growth in a symmetric domain
   Nonlinearity, vol. 16, no. 2, pp. 579–590, 2003
10. Communications in Contemporary Mathematics, vol. 5, no. 2, p. 147, 2003
11. Linking–Preserving Perturbations of Symmetric Functionals
    Journal of Differential Equations, vol. 185, no. 1, pp. 181–199, 2002
12. Borsuk–Ulam theorems for perturbed symmetric problems
    Nonlinear Analysis, vol. 47, no. 6, pp. 3749–3758, 2001
13. On the number of positive symmetric solutions of a nonautonomous semilinear elliptic problem
    Nonlinear Analysis, vol. 42, no. 3, pp. 405–422, 2000
14. ESSENTIAL EQUIVARIANT MAPS AND BORSUK–ULAM THEOREMS
    Journal of the London Mathematical Society, vol. 61, no. 3, pp. 950–960, 2000
15. Critical point theory of symmetric functions and closed geodesics
    Differential Geometry and its Applications, vol. 6, no. 4, pp. 367–396, 1996
16. Critical Point Theory for Indefinite Functionals with Symmetries
    Journal of Functional Analysis, vol. 138, no. 1, pp. 107–136, 1996
17. Critical point theory for perturbations of symmetric functionals
    Commentarii Mathematici Helvetici, vol. 71, no. 1, pp. 570–593, 1996
18. The compact category and multiple periodic solutions of Hamiltonian systems on symmetric starshaped energy surfaces
    Mathematische Annalen, vol. 293, no. 1, pp. 523–542, 1992
19. Bifurcation theory for symmetric potential operators and the equivariant cup-length
    Mathematische Zeitschrift, vol. 204, no. 1, pp. 341–356, 1990
20. The Generalized Lusternik-Schnirelmann Category of a Product Space
    Transactions of the American Mathematical Society, vol. 321, no. 2, p. 525, 1990
21. Lusternik-Schnirelmann category and minimal coverings with contractible sets
    Manuscripta Mathematica, vol. 58, no. 1-2, pp. 37–45, 1987
22. Invariants of the Lusternik-Schnirelmann Type and the Topology of Critical Sets
    Transactions of the American Mathematical Society, vol. 298, no. 2, p. 603, 1986
23. The homotopy category of parametrized spectra
    Manuscripta Mathematica, vol. 45, no. 3, pp. 219–247, 1984
24. Duality and transfer for parametrized spectra
    Archiv der Mathematik, vol. 37, no. 1, pp. 462–472, 1981