3 ms·
https://www.math.upenn.edu/~ghrist/preprints/ATSN.pdf https://www.math.upenn.edu/~ghrist/preprints/ATSN.pdf At the bottom of the original link.
by kqr2 8y ago
https://www.math.upenn.edu/~ghrist/preprints/ATSN.pdf https://www.math.upenn.edu/~ghrist/preprints/ATSN.pdf
At the bottom of the original link.