COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, vol. 48, no. 11, page. 1299 - 1302, 1995-11
MATHEMATISCHE ZEITSCHRIFT, vol. 216, no. 1, page. 471 - 482, 1994-07
COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, vol. 46, no. 7, page. 995 - 1012, 1993-08
MATHEMATISCHE ZEITSCHRIFT, vol. 212, no. 1, page. 175 - 192, 1993-02
COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, vol. 45, no. 1, page. 121 - 139, 1992-01
COMPTES RENDUS MATHEMATIQUE, vol. 315, no. 3, page. 309 - 314, 1992-01
MATHEMATISCHE ZEITSCHRIFT, vol. 207, no. 1, page. 409 - 416, 1991-05
INVENTIONES MATHEMATICAE, vol. 101, no. 1, page. 501 - 519, 1990-12
COMMUNICATIONS IN MATHEMATICAL PHYSICS, vol. 131, no. 2, page. 223 - 253, 1990-07
MATHEMATISCHE ZEITSCHRIFT, vol. 203, no. 1, page. 535 - 552, 1990-01
JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 81, no. 2, page. 255 - 274, 1989-10
JOURNAL OF DYNAMICS AND DIFFERENTIAL EQUATIONS, vol. 1, no. 3, page. 269 - 298, 1989-07
COMMUNICATIONS IN MATHEMATICAL PHYSICS, vol. 121, no. 1, page. 11 - 33, 1989-03
COMMUNICATIONS IN PARTIAL DIFFERENTIAL EQUATIONS, vol. 14, no. 6, page. 833 - 834, 1989-01
COMMUNICATIONS IN PARTIAL DIFFERENTIAL EQUATIONS, vol. 13, no. 12, page. 1499 - 1519, 1988-02
JOURNAL OF GEOMETRY AND PHYSICS, vol. 4, no. 2, page. 163 - 182, 1987-01
LETTERS IN MATHEMATICAL PHYSICS, vol. 12, no. 2, page. 87 - 91, 1986-08