@article{Jakobson_2006,
title={Extremal Metric for the First Eigenvalue on a Klein Bottle},
volume={58},
ISSN={1496-4279},
url={http://dx.doi.org/10.4153/cjm-2006-016-0},
DOI={10.4153/cjm-2006-016-0},
number={2},
journal={Canadian Journal of Mathematics},
publisher={Canadian Mathematical Society},
author={Jakobson,
Dmitry and Nadirashvili,
Nikolai and Polterovich,
Iosif},
year={2006},
month=apr,
pages={381–400} }