van Maarseveen, J. H., Meester, W. J. N., Veerman, J. J. N., Kruse, C. G., Hermkens, P. H. H., Rutjes, F. P. J. T., & Hiemstra, H. (2001). Development and application of allyl, 2-sulfonylethyl and 2-thioethyl carbamate linkers for solid phase N-acyliminium ion chemistry. Journal of the Chemical Society, 994-1001.