Optimization of ECR-breakdown and plasma discharge formation on T-10 tokamak, using X-mode second harmonic of ECR.A. Borshchegovskiy, M. Dremin, V. Il’in, N. Kirneva, A. Kislov, V. Krupin, S. Maltsev, Y. Pavlov, D. Petrov, I. Roy, D. Shelukhin and M. SokolovEPJ Web of Conferences, 32 (2012) 02004DOI: https://doi.org/10.1051/epjconf/20123202004