TY - Acta mathematica scientia,Series A A1 - Ruifeng Zhang,Nan Liu T1 - Gradient Flow Method in Nonlinear Optical Lattices Y1 - 2019-10-26 JF - Acta mathematica scientia, Series A JO - Acta mathematica scientia,Series A SP - 1170 EP - 1182 VL - 39 IS - 5 UR - http://121.43.60.238/sxwlxbA N1 - ER -