Vinkovič Vrček, I., Biruš, M., & Bühl, M. (2007). Structure and bonding of vanadium(V) complexes with hydroxyurea in aqueous solution: Density functional theory investigations of isomers and intramolecular rearrangements. Inorganic Chemistry, 46, 1488-1501. doi:10.1021/ic061699y.