S. Belmokhtar, A. Dolgui, X. Delorme, and I. Ignatenko, “Optimizing Modular Machining Line Design Problem with Mixed Activation Mode of Machining Units”, DMMS, vol. 1, no. 2, pp. 35–48, Oct. 2007, doi: 10.7494/dmms.2007.1.2.35.