| article html file updated | 5 February 2020 23:21 CET | Update | https://www.mdpi.com/2075-4426/2/4/277 |
| article html file updated | 8 May 2019 11:15 CEST | Update | N/A |
| article html file updated | 20 March 2019 15:47 CET | Update | N/A |
| article html file updated | 17 June 2015 04:43 CEST | Update | N/A |
| article html file updated | 21 July 2014 03:40 CEST | Update | N/A |
| article xml file uploaded | 21 July 2014 03:40 CEST | Original file | https://www.mdpi.com/2075-4426/2/4/277/xml |
| article html file updated | 7 February 2013 17:20 CET | Update | N/A |
| article html file updated | 24 January 2013 10:51 CET | Original file | N/A |
