NATURE

LUI CH, LIU L, MAK KF, FLYNN GW, HEINZ TF

NANO LETTERS

STOLYAROVA E, STOLYAROV D, BOLOTIN K, RYU S, LIU L, RIM KT, KLIMA M, HYBERTSEN M, POGORELSKY I, PAVLISHIN I, KUSCHE K, HONE J, KIM P, STORMER HL, YAKIMENKO V, FLYNN G