References
- Alama , S. and Li , Y. Y. 1992 . J. Diff. Eq. , 96 : 89 – 115 .
- Bartsch , T. and Willem , M. 1993 . Arch. Rational Mech. Anal. , 124 : 261 – 276 .
- Beresticki , H. and Lions , P. I. 1983 . Arch. Rarional Mech. Anal. , 82 : 313 – 345 .
- Berezin , F. and Schubin , M. 1983 . The Schrodinger equation , Moskow : trniv. Moskow .
- Esteban , M. 1983 . J. Nonlinear Analysis, TMA , 7 ( 4 ) : 365 – 374 .
- Esteban , M. and Lions , P. 1983 . J. Nonlinear Analysis, TMA , 7 ( 4 ) : 381 – 385 .
- Omana , W. and Willem , M. 1992 . Diff. Int. Eq. v. , 5 ( 5 ) : 1115 – 1120 .
- Rabinowitz , P. 1991 . Nonlinear Analysis . Scuola Norm. Superiore, Pisa , : 307 – 317 .
- Rabinowitz , P. 1986 . Minimax Methods in Critical Point theory with Applications to Differential Equations, . CBMS Req. Cont. No 65, Amer. Math. Soc., Providence, ,
- Rabinowitz , P. and Tanaka , K. 1991 . Math. Z. , 206 : 473 – 499 .
- Reed , M. and Saimon , B. 1983 . Methods of modern mathematical Physics, v. IV Moskow
- Strauss , W. 1977 . Comm. Math. Physics , 55 : 149 – 162 .
- Zelati , V. C. and Rabinowitz , P. 1991 . Homoclinic type solutions for a semilinear elliptic PDE on IRn. . Ref. SISSA 58/91/M, ,