@article{MM2_1995__86_3_156034,
     author = {Xianqing Li-Jost},
     title = {Bifurcation near solutions of variational problems with degenerate second variation.},
     journal = {Manuscripta mathematica},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {86},
     number = {3},
     year = {1995},
     zbl = {0816.58011},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__86_3_156034/}
}