| article html file updated | 9 February 2020 04:27 CET | Update | https://www.mdpi.com/2076-0760/7/2/18 |
| article html file updated | 30 September 2019 06:05 CEST | Update | - |
| article html file updated | 1 May 2019 23:20 CEST | Update | - |
| article html file updated | 17 April 2019 21:56 CEST | Update | - |
| article html file updated | 28 March 2019 18:34 CET | Update | - |
| article html file updated | 26 January 2018 11:38 CET | Original file | - |
| article xml uploaded. | 26 January 2018 11:36 CET | Original file | https://www.mdpi.com/2076-0760/7/2/18/xml |
| article pdf uploaded. | 26 January 2018 11:36 CET | Version of Record | https://www.mdpi.com/2076-0760/7/2/18/pdf |
