@article{CMH_1991__66_4_140247,
     author = {Leon Karp and Isaac Chavel},
     title = {Large time behavior of the heat kernel: the parabolic ...-potential alternative.},
     journal = {Commentarii mathematici Helvetici},
     pages = {541--556},
     publisher = {mathdoc},
     volume = {66},
     number = {4},
     year = {1991},
     zbl = {0754.58039},
     url = {http://geodesic.mathdoc.fr/item/CMH_1991__66_4_140247/}
}