| article html file updated | 9 February 2020 04:19 CET | Update | https://www.mdpi.com/2227-9709/5/1/7 |
| article html file updated | 30 September 2019 05:17 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:38 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:12 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:17 CET | Update | N/A |
| article html file updated | 27 March 2018 15:27 CEST | Update | N/A |
| article html file updated | 25 January 2018 10:19 CET | Original file | N/A |
| article xml uploaded. | 25 January 2018 10:18 CET | Original file | https://www.mdpi.com/2227-9709/5/1/7/xml |
| article pdf uploaded. | 25 January 2018 10:18 CET | Version of Record | https://www.mdpi.com/2227-9709/5/1/7/pdf |
