| article html file updated | 9 February 2020 12:05 CET | Update | https://www.mdpi.com/2220-9964/7/4/134 |
| article html file updated | 2 October 2019 04:22 CEST | Update | - |
| article html file updated | 1 May 2019 06:58 CEST | Update | - |
| article html file updated | 17 April 2019 07:00 CEST | Update | - |
| article html file updated | 29 March 2019 11:43 CET | Update | - |
| article html file updated | 1 May 2018 03:55 CEST | Update | - |
| article html file updated | 1 April 2018 04:56 CEST | Original file | - |
| article xml uploaded. | 1 April 2018 04:54 CEST | Update | https://www.mdpi.com/2220-9964/7/4/134/xml |
| article pdf uploaded. | 1 April 2018 04:54 CEST | Version of Record | https://www.mdpi.com/2220-9964/7/4/134/pdf |
