共 24 条
[1]
Badiale M., 2004, REND SEM MATH U POL, V62, P107
[2]
Bellazzini J, 2010, ADV NONLINEAR STUD, V10, P481
[3]
Bellazzini J, 2009, DYNAM PART DIFFER EQ, V6, P311
[5]
Benci V, 2008, ADV NONLINEAR STUD, V8, P327
[9]
Benci V, 2009, REND LINCEI-MAT APPL, V20, P243