| article html file updated | 9 February 2020 04:19 CET | Update | https://www.mdpi.com/2411-5150/2/1/4 |
| article html file updated | 6 November 2019 11:16 CET | Update | - |
| article html file updated | 1 May 2019 23:36 CEST | Update | - |
| article html file updated | 17 April 2019 22:10 CEST | Update | - |
| article html file updated | 28 March 2019 18:19 CET | Update | - |
| article html file updated | 25 January 2018 12:07 CET | Update | - |
| article xml uploaded. | 25 January 2018 12:05 CET | Update | https://www.mdpi.com/2411-5150/2/1/4/xml |
| article xml uploaded. | 25 January 2018 12:05 CET | Update | - |
| article xml uploaded. | 25 January 2018 12:05 CET | Update | - |
| article xml uploaded. | 25 January 2018 12:05 CET | Update | - |
| article html file updated | 25 January 2018 11:13 CET | Original file | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Update | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Update | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Update | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Update | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Update | - |
| article xml uploaded. | 25 January 2018 11:11 CET | Original file | - |
| article pdf uploaded. | 25 January 2018 11:11 CET | Version of Record | https://www.mdpi.com/2411-5150/2/1/4/pdf |
