| article html file updated | 7 February 2020 04:04 CET | Update | https://www.mdpi.com/2073-4360/8/2/13 |
| article html file updated | 21 September 2019 10:39 CEST | Update | - |
| article html file updated | 6 May 2019 01:23 CEST | Update | - |
| article html file updated | 26 March 2019 19:42 CET | Update | - |
| article html file updated | 15 March 2019 11:37 CET | Original file | - |
| article pdf uploaded. | 29 January 2016 12:25 CET | Version of Record | https://www.mdpi.com/2073-4360/8/2/13/pdf |
| article xml uploaded. | 29 January 2016 12:25 CET | Original file | https://www.mdpi.com/2073-4360/8/2/13/xml |
