| article html file updated | 5 February 2020 17:37 CET | Update | https://www.mdpi.com/2079-9268/1/2/261 |
| article html file updated | 9 May 2019 00:07 CEST | Update | - |
| article html file updated | 20 March 2019 08:22 CET | Update | - |
| article html file updated | 16 June 2015 17:04 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/2079-9268/1/2/261/xml |
| article html file updated | 6 February 2013 21:42 CET | Update | - |
| article html file updated | 6 February 2013 01:32 CET | Update | - |
| article html file updated | 28 January 2013 22:56 CET | Update | - |
| article html file updated | 26 January 2013 03:29 CET | Update | - |
| article html file updated | 22 January 2013 18:38 CET | Original file | - |
