CARBON, vol. 61, page. 373 - 378, 2013-09
NATURE COMMUNICATIONS, vol. 4, 2013-09
PHYSICAL REVIEW LETTERS, vol. 110, no. 22, page. 226801, 2013-05-29
Physical Review Letters, vol. 110, no. 9, page. 966021 - 66025, 2013-02-27
Applied Physics Express, vol. 6, no. 2, page. 25102, 2013-02