@techreport {segura15-tr-v2, title = {Metamorphic Testing: A Literature Review v1.1}, number = {ISA-15-TR-02}, year = {2015}, note = {Version 1.1}, month = {July}, publisher = {Applied Software Engineering Research Group, University of Seville}, address = {Seville, Spain}, author = {S. Segura and Gordon Fraser and Ana B. S{\'a}nchez and Antonio Ruiz-Cort{\'e}s} }