TY - GEN AU - Koshelev,A E AU - Golubov,A A TI - Why magnesium diboride is not described by anisotropic Ginzburg-Landau theory SN - 0031-9007 PY - 2004///0519 N1 - Publication Type: Journal Article UR - https://doi.org/10.1103/PhysRevLett.92.107008 ER -