"IUPAC. Compendium of Chemical Terminology", 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook. Last update: 2012-08-19; version: 2.3.2. DOI of this term: doi:10.1351/goldbook.C01331., http://goldbook.iupac.org/C01331.html
"IUPAC. Compendium of Chemical Terminology", 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook. Last update: 2012-08-19; version: 2.3.2. DOI of this term: doi:10.1351/goldbook.C01331., http://goldbook.iupac.org/O04328.html
"Coordination chemistry beyond Werner: interplay between hydrogen bonding and coordination",Jan Reedijk
, Chem. Soc. Rev., 2013, Advance Article, DOI: 10.1039/C2CS35239G, http://pubs.rsc.org/en/content/articlelanding/2013/CS/C2CS35239G
Received 03 Jul 2012, First published on the web 17 Aug 2012