| article html file updated | 8 February 2020 08:50 CET | Update | https://www.mdpi.com/2073-4360/9/6/240 |
| article html file updated | 25 September 2019 11:19 CEST | Update | N/A |
| article html file updated | 3 May 2019 16:24 CEST | Update | N/A |
| article html file updated | 18 March 2019 06:03 CET | Update | N/A |
| article html file updated | 28 June 2017 14:26 CEST | Update | N/A |
| article html file updated | 21 June 2017 15:51 CEST | Original file | N/A |
| article xml uploaded. | 21 June 2017 15:50 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/240/xml |
| article pdf uploaded. | 21 June 2017 15:50 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/240/pdf |
