PHYSICAL REVIEW LETTERS

VDOVIN EE, MISHCHENKO A, GREENAWAY MT, ZHU MJ, GHAZARYAN D, MISRA A, CAO Y, MOROZOV SV, MAKAROVSKY O, FROMHOLD TM, PATANE A, SLOTMAN GJ, KATSNELSON MI, GEIM AK, NOVOSELOV KS, EAVES L

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

LV RT, CHEN GG, LI Q, MCCREARY A, BOTELLOMENDEZ A, MOROZOV SV, LIANG LB, DECLERCK X, PEREALOPEZ N, CULLEN DA, FENG SM, ELIAS AL, CRUZSILVA R, FUJISAWA K, ENDO M, KANG FY, CHARLIER JC, MEUNIER V, PAN MH, HARUTYUNYAN AR, NOVOSELOV KS, TERRONES M