| article html file updated | 9 February 2020 07:27 CET | Update | https://www.mdpi.com/2218-1989/8/1/17 |
| article html file updated | 1 October 2019 00:06 CEST | Update | - |
| article html file updated | 1 May 2019 16:43 CEST | Update | - |
| article html file updated | 17 April 2019 16:07 CEST | Update | - |
| article html file updated | 29 March 2019 01:04 CET | Update | - |
| article html file updated | 26 March 2018 17:14 CEST | Update | - |
| article html file updated | 24 February 2018 06:49 CET | Original file | - |
| article xml uploaded. | 24 February 2018 06:48 CET | Original file | https://www.mdpi.com/2218-1989/8/1/17/xml |
| article pdf uploaded. | 24 February 2018 06:48 CET | Version of Record | https://www.mdpi.com/2218-1989/8/1/17/pdf |
