| article html file updated | 8 February 2020 08:48 CET | Update | https://www.mdpi.com/2073-4360/9/6/239 |
| article html file updated | 25 September 2019 11:06 CEST | Update | - |
| article html file updated | 3 May 2019 16:29 CEST | Update | - |
| article html file updated | 18 March 2019 06:03 CET | Update | - |
| article html file updated | 28 June 2017 14:26 CEST | Update | - |
| article html file updated | 21 June 2017 11:22 CEST | Original file | - |
| article xml uploaded. | 21 June 2017 11:20 CEST | Update | https://www.mdpi.com/2073-4360/9/6/239/xml |
| article pdf uploaded. | 21 June 2017 11:20 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/6/239/pdf |
| article pdf uploaded. | 20 June 2017 14:18 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/239/pdf-vor |
