Varmuza, K., Filzmoser, P., Hoffmann, I., Walach, J., Cottin, H., Fray, N., BRIOIS, C., Modica, P., Bardyn, A., Silén, J., Siljeström, S., Stenzel, O., Kissel, J., & Hilchenbach, M. (2018). Significance of variables for discrimination: Applied to the search of organic ions in mass spectra measured on cometary particles. Journal of Chemometrics, 32(4), e3001. https://doi.org/10.1002/cem.3001