| article html file updated | 6 February 2020 07:49 CET | Update | https://www.mdpi.com/2076-2607/2/1/73 |
| article html file updated | 7 May 2019 17:31 CEST | Update | N/A |
| article html file updated | 21 March 2019 13:39 CET | Update | N/A |
| article html file updated | 20 September 2016 11:45 CEST | Update | N/A |
| article html file updated | 12 July 2016 04:24 CEST | Update | N/A |
| article html file updated | 19 August 2015 23:14 CEST | Update | N/A |
| article html file updated | 14 November 2014 11:01 CET | Original file | N/A |
| article xml file uploaded | 14 November 2014 11:01 CET | Original file | https://www.mdpi.com/2076-2607/2/1/73/xml |
| article pdf uploaded. | 10 March 2014 11:30 CET | Version of Record | https://www.mdpi.com/2076-2607/2/1/73/pdf |
