@article{JEMS_2005_7_1_a3,
     author = {Anton Bovier and V\'eronique Gayrard and Markus Klein},
     title = {Metastability in reversible diffusion processes {II:} precise asymptotics for small eigenvalues},
     journal = {Journal of the European Mathematical Society},
     pages = {69--99},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2005},
     doi = {10.4171/jems/22},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/22/}
}