Venderbosch, Bas; Oudsen, Jean-Pierre H.; Wolzak, Lukas A.; Martin, David J. ; Korstanje, Ties J.; Tromp, Moniek. Spectroscopic Investigation of the Activation of a Chromium-Pyrrolyl Ethene Trimerization Catalyst. ACS Catalysis (2019), 9(2), 1197-1210. doi:10.1021/acscatal.8b03414.