@article{10_1090_S0894_0347_98_00254_9,
     author = {Grieser, Daniel and Jerison, David},
     title = {The size of the first eigenfunction of a convex planar domain},
     journal = {Journal of the American Mathematical Society},
     pages = {41--72},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1998},
     doi = {10.1090/S0894-0347-98-00254-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-98-00254-9/}
}