@article{10_1090_S0894_0347_99_00306_9,
     author = {Lind, Douglas and Schmidt, Klaus},
     title = {Homoclinic points of algebraic {\ensuremath{\mathbb{Z}}^{\ensuremath{\mathbb{d}}}-actions}},
     journal = {Journal of the American Mathematical Society},
     pages = {953--980},
     year = {1999},
     volume = {12},
     number = {4},
     doi = {10.1090/S0894-0347-99-00306-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-99-00306-9/}
}