Roschangar, F., Zhou, Y., Constable, D. J. C., Colberg, J., Dickson, D. P., Dunn, P. J., Eastgate, M. D., Gallou, F., Hayler, J. D., Koenig, S. G., Kopach, M. E., Leahy, D. K., Mergelsberg, I., Scholz, U., Smith, A. G., Henry, M., Mulder, J., Brandenburg, J., Dehli, J. R., Fandrick, D. R., Fandrick, K. R., Gnad-Badouin, F., Zerban, G., Groll, K., Anastas, P. T., Sheldon, R. A., & Senanayake, C. H. (2018). inspiring process innovation via an improved green manufacturing metric: iGAL. Green chemistry, 20(10), 2206–2211. http://access.bl.uk/ark:/81055/vdc_100174354013.0x00003a