| article html file updated | 8 February 2020 07:56 CET | Update | https://www.mdpi.com/2073-4360/9/6/213 |
| article html file updated | 25 September 2019 06:35 CEST | Update | - |
| article html file updated | 3 May 2019 18:07 CEST | Update | - |
| article html file updated | 18 March 2019 05:56 CET | Update | - |
| article html file updated | 28 June 2017 14:21 CEST | Update | - |
| article html file updated | 9 June 2017 14:53 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 14:51 CEST | Update | https://www.mdpi.com/2073-4360/9/6/213/xml |
| article pdf uploaded. | 9 June 2017 14:51 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/213/pdf |
