| article html file updated | 8 February 2020 06:47 CET | Update | https://www.mdpi.com/2073-4360/9/6/191 |
| article html file updated | 25 September 2019 00:47 CEST | Update | - |
| article html file updated | 3 May 2019 20:15 CEST | Update | - |
| article html file updated | 18 March 2019 05:50 CET | Update | - |
| article html file updated | 28 June 2017 14:16 CEST | Update | - |
| article html file updated | 28 May 2017 02:47 CEST | Original file | - |
| article xml uploaded. | 28 May 2017 02:46 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/191/xml |
| article pdf uploaded. | 28 May 2017 02:46 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/6/191/pdf |
| article pdf uploaded. | 26 May 2017 11:55 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/191/pdf-vor |
