| article html file updated | 5 February 2020 21:36 CET | Update | https://www.mdpi.com/2218-1989/2/3/516 |
| article html file updated | 8 May 2019 15:37 CEST | Update | N/A |
| article html file updated | 20 March 2019 11:32 CET | Update | N/A |
| article html file updated | 17 June 2015 01:41 CEST | Update | N/A |
| article html file updated | 7 January 2014 12:24 CET | Update | N/A |
| article xml file uploaded | 7 January 2014 12:24 CET | Update | https://www.mdpi.com/2218-1989/2/3/516/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 14:23 CET | Update | N/A |
| article html file updated | 7 February 2013 05:26 CET | Update | N/A |
| article html file updated | 6 February 2013 09:42 CET | Update | N/A |
| article html file updated | 29 January 2013 05:58 CET | Update | N/A |
| article html file updated | 27 January 2013 01:30 CET | Update | N/A |
| article html file updated | 24 January 2013 00:06 CET | Original file | N/A |
