The Journal of Physical Chemistry Letters, vol. 7, no. 12, page. 2170 - 2174, 2016-06-16
Journal of Physical Chemistry Letters, vol. 7, no. 15, page. 3046 - 3051, 2016-08-04
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 101, no. 11, page. 3803 - 3808, 2004-03-16