| article html file updated | 9 February 2020 18:57 CET | Update | https://www.mdpi.com/2073-4395/8/6/81 |
| article html file updated | 30 April 2019 16:51 CEST | Update | - |
| article html file updated | 16 April 2019 17:18 CEST | Update | - |
| article html file updated | 30 March 2019 04:25 CET | Update | - |
| article html file updated | 25 June 2018 11:42 CEST | Update | - |
| article html file updated | 25 May 2018 04:38 CEST | Original file | - |
| article pdf uploaded. | 25 May 2018 04:37 CEST | Version of Record | https://www.mdpi.com/2073-4395/8/6/81/pdf |
| article xml uploaded. | 25 May 2018 04:37 CEST | Update | https://www.mdpi.com/2073-4395/8/6/81/xml |
| article xml file uploaded | 25 May 2018 04:37 CEST | Original file | - |
