author = { Corvaja, Pietro AND Petronio, Carlo AND Zannier, Umberto },

title = { On certain permutation groups and sums of two squares },

publisher = {European Mathematical Society - EMS - Publishing House GmbH},

isbn = {0013-6018},

isbn = {1420-8962},

year = {2012},

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