| article html file updated | 9 February 2020 13:30 CET | Update | https://www.mdpi.com/2073-4344/8/4/156 |
| article html file updated | 2 October 2019 12:57 CEST | Update | - |
| article html file updated | 1 May 2019 04:07 CEST | Update | - |
| article html file updated | 17 April 2019 04:27 CEST | Update | - |
| article html file updated | 29 March 2019 14:56 CET | Update | - |
| article html file updated | 1 May 2018 14:48 CEST | Update | - |
| article html file updated | 12 April 2018 10:28 CEST | Original file | - |
| article xml uploaded. | 12 April 2018 10:26 CEST | Original file | https://www.mdpi.com/2073-4344/8/4/156/xml |
| article pdf uploaded. | 12 April 2018 10:26 CEST | Version of Record | https://www.mdpi.com/2073-4344/8/4/156/pdf |
