TY - CPAPER AU - Kai Petersen AU - Cigdem Gencel BT - The Joint Conference of the 23nd International Workshop on Software Measurement (IWSM) and the 8th International Conference on Software Process and Product Measurement (Mensura) PY - 2013 T2 - The Joint Conference of the 23nd International Workshop on Software Measurement (IWSM) and the 8th International Conference on Software Process and Product Measurement (Mensura) TI - Worldviews, Research Methods, and their Relationship to Validity in Empirical Software Engineering Research ER -