| article html file updated | 5 February 2020 14:36 CET | Update | https://www.mdpi.com/1424-8247/3/6/1739 |
| article html file updated | 9 May 2019 06:09 CEST | Update | - |
| article html file updated | 20 March 2019 00:40 CET | Update | - |
| article html file updated | 16 June 2015 09:59 CEST | Update | - |
| article html file updated | 5 June 2014 09:02 CEST | Original file | - |
| article xml file uploaded | 5 June 2014 09:02 CEST | Original file | https://www.mdpi.com/1424-8247/3/6/1739/xml |
