| article html file updated | 5 February 2020 22:05 CET | Update | https://www.mdpi.com/2075-4450/3/4/900 |
| article html file updated | 8 May 2019 14:32 CEST | Update | - |
| article html file updated | 20 March 2019 12:47 CET | Update | - |
| article html file updated | 17 June 2015 02:31 CEST | Update | - |
| article html file updated | 27 January 2015 07:07 CET | Update | - |
| article xml file uploaded | 27 January 2015 07:07 CET | Original file | https://www.mdpi.com/2075-4450/3/4/900/xml |
| article html file updated | 7 February 2013 15:12 CET | Update | - |
| article html file updated | 24 January 2013 02:43 CET | Original file | - |
