Field emission properties of pointed cathodes based on graphene films on SiC - R. V. Konakova; O. B. Okhrimenko; A. F. Kolomys; V. V. Strelchuk; A. M. Svetlichnyj; O. A. Ageev; Ju. Volkov; A. S. Kolomijtsev; I. L. Zhitjaev; O. B. Spiridonov (Superhard Materials, 2016)