Business & Information Systems Engineering
Business & Information Systems Engineering > 2015 > 57 > 5 > 339-343
Business & Information Systems Engineering > 2015 > 57 > 5 > 325-338
Business & Information Systems Engineering > 2015 > 57 > 5 > 311-324
Business & Information Systems Engineering > 2015 > 57 > 5 > 299-310