| article html file updated | 9 February 2020 04:34 CET | Update | https://www.mdpi.com/2311-5629/4/1/9 |
| article html file updated | 30 September 2019 06:52 CEST | Update | - |
| article html file updated | 15 August 2019 08:00 CEST | Update | - |
| article html file updated | 1 May 2019 23:04 CEST | Update | - |
| article html file updated | 17 April 2019 21:43 CEST | Update | - |
| article html file updated | 28 March 2019 18:50 CET | Update | - |
| article html file updated | 27 January 2018 09:07 CET | Original file | - |
| article xml uploaded. | 27 January 2018 09:06 CET | Update | https://www.mdpi.com/2311-5629/4/1/9/xml |
| article xml uploaded. | 27 January 2018 09:06 CET | Original file | - |
| article pdf uploaded. | 27 January 2018 09:06 CET | Version of Record | https://www.mdpi.com/2311-5629/4/1/9/pdf |
