author = { Vikhnina, G. V. AND Pekar, V. S. },

title = { Excited states in logarithmic perturbation theory },

publisher = {Springer Science and Business Media LLC},

isbn = {0040-5779},

isbn = {1573-9333},

keywords = { Mathematical Physics , Statistical and Nonlinear Physics },

year = {1986},

url = { http://slubdd.de/katalog?TN_libero_mab2 }