@article{articled3119b32,
title   = {Mixed two- and four-level experimental designs for interchangeable parts with different degrees of assembly difficulty},
author = {Vivacqua, Carla Almeida and Ho, Linda Lee and Pinho, André Luís Santos de},
year = {2017},
doi = {10.1108/IJQRM-01-2016-0006},
journal   = {International Journal of Quality & Reliability Management}
}