@incollection{Allen11,
author = {Theodore T. Allen and James E. Brady and Jason Schenk},
title = {Analysing Portfolios of LeanSix Sigma Projects},
booktitle = {Six Sigma},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Abdurrahman Coskun},
chapter = {4},
doi = {10.5772/16732},
url = {https://doi.org/10.5772/16732}
}