| article html file updated | 9 February 2020 04:30 CET | Update | https://www.mdpi.com/2411-9660/2/1/4 |
| article html file updated | 30 September 2019 06:27 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:13 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:50 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:42 CET | Update | N/A |
| article html file updated | 29 January 2018 05:41 CET | Original file | N/A |
| article xml uploaded. | 29 January 2018 02:30 CET | Original file | https://www.mdpi.com/2411-9660/2/1/4/xml |
| article pdf uploaded. | 29 January 2018 02:30 CET | Updated version of record | https://www.mdpi.com/2411-9660/2/1/4/pdf |
| article pdf uploaded. | 26 January 2018 15:05 CET | Updated version of record | https://www.mdpi.com/2411-9660/2/1/4/pdf-vor |
| article pdf uploaded. | 26 January 2018 15:03 CET | Version of Record | https://www.mdpi.com/2411-9660/2/1/4/pdf-vor |
