| article html file updated | 8 February 2020 07:17 CET | Update | https://www.mdpi.com/2073-4360/9/6/204 |
| article html file updated | 25 September 2019 03:17 CEST | Update | - |
| article html file updated | 3 May 2019 19:19 CEST | Update | - |
| article html file updated | 18 March 2019 05:53 CET | Update | - |
| article html file updated | 28 June 2017 14:19 CEST | Update | - |
| article html file updated | 3 June 2017 10:51 CEST | Original file | - |
| article xml uploaded. | 3 June 2017 10:50 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/204/xml |
| article pdf uploaded. | 3 June 2017 10:50 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/6/204/pdf |
| article pdf uploaded. | 2 June 2017 12:26 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/204/pdf-vor |
