H. Braunschweig, C. Kollann, F. Seeler: Transition Metal Borylene Complexes.- D.L. Kays, S. Aldridge: Transition Metal Boryl Complexes.- Z. Lin: Transition Metal Sigma-Borane Complexes.- M. Besora, A. Lledós: Coordination Modes and Hydride Exchange Dynamics in Transition Metal Tetrahydroborate Complexes