| article html file updated | 5 February 2020 21:52 CET | Update | https://www.mdpi.com/2218-1989/2/3/596 |
| article html file updated | 8 May 2019 15:01 CEST | Update | N/A |
| article html file updated | 20 March 2019 12:13 CET | Update | N/A |
| article html file updated | 17 June 2015 02:08 CEST | Update | N/A |
| article html file updated | 7 January 2014 12:25 CET | Update | N/A |
| article xml file uploaded | 7 January 2014 12:25 CET | Update | https://www.mdpi.com/2218-1989/2/3/596/xml |
| article html file updated | 30 August 2013 09:14 CEST | Update | N/A |
| article xml file uploaded | 30 August 2013 09:14 CEST | Original file | N/A |
| article html file updated | 7 February 2013 14:51 CET | Update | N/A |
| article html file updated | 7 February 2013 05:53 CET | Update | N/A |
| article html file updated | 6 February 2013 10:10 CET | Update | N/A |
| article html file updated | 29 January 2013 06:26 CET | Update | N/A |
| article html file updated | 24 January 2013 01:31 CET | Original file | N/A |
