| article html file updated | 9 February 2020 11:47 CET | Update | https://www.mdpi.com/2073-4395/8/4/38 |
| article html file updated | 2 October 2019 02:29 CEST | Update | - |
| article html file updated | 1 May 2019 07:35 CEST | Update | - |
| article html file updated | 17 April 2019 07:34 CEST | Update | - |
| article html file updated | 29 March 2019 11:02 CET | Update | - |
| article html file updated | 1 May 2018 10:11 CEST | Update | - |
| article html file updated | 29 March 2018 17:40 CEST | Original file | - |
| article xml uploaded. | 29 March 2018 17:39 CEST | Original file | https://www.mdpi.com/2073-4395/8/4/38/xml |
| article pdf uploaded. | 29 March 2018 17:39 CEST | Version of Record | https://www.mdpi.com/2073-4395/8/4/38/pdf |
