| article html file updated | 5 February 2020 20:16 CET | Update | https://www.mdpi.com/2075-4450/3/2/442 |
| article html file updated | 8 May 2019 18:31 CEST | Update | N/A |
| article html file updated | 25 March 2019 10:50 CET | Update | N/A |
| article html file updated | 16 June 2015 23:34 CEST | Update | N/A |
| article html file updated | 27 January 2015 07:02 CET | Update | N/A |
| article xml file uploaded | 27 January 2015 07:02 CET | Original file | https://www.mdpi.com/2075-4450/3/2/442/xml |
| article html file updated | 7 February 2013 12:03 CET | Update | N/A |
| article html file updated | 7 February 2013 02:02 CET | Update | N/A |
| article html file updated | 6 February 2013 07:26 CET | Update | N/A |
| article html file updated | 29 January 2013 03:05 CET | Update | N/A |
| article html file updated | 26 January 2013 10:06 CET | Update | N/A |
| article html file updated | 23 January 2013 16:37 CET | Original file | N/A |
