Graphene layers fabricated from the Ni/a-SiC bilayer precursor - A. N. Nazarov; A. V. Vasin; S. O. Gordienko; P. M. Lytvyn; V. V. Strelchuk; A. S. Nikolenko; A. S. Hirov; A. V. Rusavsky; V. P. Popov; V. S. Lysenko (Semiconductor Physics, Quantum Electronics and Optoelectronics, 2013)