Maybe just pull out the substring between '}' and '(', stick that substring in a hash that uses the whole string as the key and the substring as a value. Kind of brute force, but if regex is not your strong suit(as it is not really mine), then this method should work for you...once that is done, sorting is a matter of making an array of the values(Author), sorting the array and printing out the hash keys with the values found in the sorted array.

Hope that is helpful...