| article html file updated | 7 February 2020 03:29 CET | Update | https://www.mdpi.com/2073-4360/8/1/18 |
| article html file updated | 21 September 2019 09:46 CEST | Update | - |
| article html file updated | 6 May 2019 02:28 CEST | Update | - |
| article html file updated | 26 March 2019 18:34 CET | Update | - |
| article html file updated | 15 March 2019 08:11 CET | Original file | - |
| article pdf uploaded. | 15 January 2016 13:09 CET | Version of Record | https://www.mdpi.com/2073-4360/8/1/18/pdf |
| article xml uploaded. | 15 January 2016 13:09 CET | Original file | https://www.mdpi.com/2073-4360/8/1/18/xml |
