| article html file updated | 5 February 2020 09:31 CET | Update | https://www.mdpi.com/1422-0067/8/1/29 |
| article html file updated | 9 May 2019 17:05 CEST | Update | - |
| article html file updated | 19 March 2019 12:30 CET | Update | - |
| article html file updated | 10 June 2013 09:58 CEST | Update | - |
| article xml file uploaded | 10 June 2013 09:57 CEST | Update | https://www.mdpi.com/1422-0067/8/1/29/xml |
| article html file updated | 29 May 2013 13:32 CEST | Original file | - |
| article xml file uploaded | 29 May 2013 13:31 CEST | Original file | - |
