Helber, Stefan ; de Kok, Ton ; Kuhn, Heinrich...
Helber , S , de Kok , T , Kuhn , H , Manitz , M , Matta , A & Stolletz , R 2019 , ' Quantitative approaches in production management ' , OR Spectrum , vol. 41 , no. 4 , pp. 867-870 . https://doi.org/10.1007/s00291-019-00569-6.  , 2019