Plácido, D., Fernandes, C., Isidro, A., Carrondo, M., Henriques, A., & Archer, M. (2008). Auto-induction and purification of a Bacillus subtilis transglutaminase (Tgl) and its preliminary crystallographic characterization. Protein Expression and Purification, 59(1), 1-8. https://doi.org/10.1016/j.pep.2007.12.004 (Original work published 2008)

Rodrigues, M., Bonifácio, M., Soares-da-Silva, P., Carrondo, M., & Archer, M. (1969). Crystallization and preliminary X-ray diffraction studies of a catechol-O-methyltransferase/inhibitor complex. Acta Crystallographica. Section F, Structural Biology and Crystallization Communications, 61(Pt 1), 118-20. https://doi.org/10.1107/S1744309104031197 (Original work published)