TY - BOOK AU - Ding Yanheng TI - Variational methods for strongly indefinite problems T2 - Interdisciplinary sciences, 7 SN - 9789812709622 (hbd) U1 - B28931, P7 TB PY - 2007/// CY - New Jersey PB - World Scientific KW - Diffusion equation KW - Dirac equations KW - Mathematics N1 - Bibliography 161-166p.; Index 167-168p ER -