Tyrus Berry, Steven M. Heilman, Robert S. Strichartz. Outer Approximation of the Spectrum of a Fractal Laplacian. Experimental Mathematics, 18(4):449-480, 2009. [doi]
@article{BerryHS09,
title = {Outer Approximation of the Spectrum of a Fractal Laplacian},
author = {Tyrus Berry and Steven M. Heilman and Robert S. Strichartz},
year = {2009},
doi = {10.1080/10586458.2009.10129061},
url = {http://dx.doi.org/10.1080/10586458.2009.10129061},
researchr = {https://researchr.org/publication/BerryHS09},
cites = {0},
citedby = {0},
journal = {Experimental Mathematics},
volume = {18},
number = {4},
pages = {449-480},
}