| article html file updated | 8 February 2020 06:59 CET | Update | https://www.mdpi.com/2073-4360/9/6/194 |
| article html file updated | 25 September 2019 01:48 CEST | Update | - |
| article html file updated | 3 May 2019 19:53 CEST | Update | - |
| article html file updated | 18 March 2019 05:51 CET | Update | - |
| article html file updated | 28 June 2017 14:17 CEST | Update | - |
| article html file updated | 30 May 2017 11:53 CEST | Original file | - |
| article xml uploaded. | 30 May 2017 11:52 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/194/xml |
| article pdf uploaded. | 30 May 2017 11:12 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/194/pdf |
