| article html file updated | 9 February 2020 03:12 CET | Update | https://www.mdpi.com/2226-4787/6/1/7 |
| article html file updated | 29 September 2019 22:53 CEST | Update | N/A |
| article html file updated | 2 May 2019 01:58 CEST | Update | N/A |
| article html file updated | 18 April 2019 00:15 CEST | Update | N/A |
| article html file updated | 28 March 2019 15:53 CET | Update | N/A |
| article html file updated | 27 March 2018 15:00 CEST | Update | N/A |
| article html file updated | 16 January 2018 08:41 CET | Original file | N/A |
| article xml uploaded. | 16 January 2018 08:40 CET | Original file | https://www.mdpi.com/2226-4787/6/1/7/xml |
| article pdf uploaded. | 16 January 2018 08:40 CET | Version of Record | https://www.mdpi.com/2226-4787/6/1/7/pdf |
