@INCOLLECTION{Liggesmeyer1996, author = {Liggesmeyer, P.}, title = {Metriken zur Planung, Steuerung und Optimierung des Softwaretests}, booktitle = {Software-Metriken in der Praxis}, publisher = {Springer}, year = {1996}, editor = {Dumke, R. and Ebert, C.}, pages = {84-104} }