| article html file updated | 7 February 2020 06:29 CET | Update | https://www.mdpi.com/2073-4360/8/4/77 |
| article html file updated | 21 September 2019 14:03 CEST | Update | - |
| article html file updated | 5 May 2019 20:16 CEST | Update | - |
| article html file updated | 27 March 2019 00:27 CET | Update | - |
| article html file updated | 15 March 2019 11:40 CET | Update | - |
| article html file updated | 29 April 2016 09:38 CEST | Update | - |
| article html file updated | 28 March 2016 11:37 CEST | Original file | - |
| article xml uploaded. | 28 March 2016 11:35 CEST | Original file | https://www.mdpi.com/2073-4360/8/4/77/xml |
| article pdf uploaded. | 28 March 2016 11:35 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/4/77/pdf |
