@article{JEMS_2005_7_3_a0,
     author = {Mohammed Ben Ayed and Khalil El Mehdi and Mohameden Ould Ahmedou and Filomena Pacella},
     title = {Energy and {Morse} index of solutions of {Yamabe} type problems on thin annuli},
     journal = {Journal of the European Mathematical Society},
     pages = {283--304},
     publisher = {mathdoc},
     volume = {7},
     number = {3},
     year = {2005},
     doi = {10.4171/jems/29},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/29/}
}