I. Almeida and J. M. Silva, "Proposing a virtual operations network to support a business policy for the medicinal and aromatic plants sector", in Proc. of the 18th Cambridge Int. Manufacturing Symp., Harrington, T., Srai, J.S., Christodoulou, P., Kumar, M., Settani, E. , Ed., Cambridge, Institute for Manufacturing - Cambridge University , 2014