| article html file updated | 7 February 2020 04:44 CET | Update | https://www.mdpi.com/2073-4360/8/2/55 |
| article html file updated | 21 September 2019 11:35 CEST | Update | - |
| article html file updated | 5 May 2019 23:56 CEST | Update | - |
| article html file updated | 26 March 2019 21:05 CET | Update | - |
| article html file updated | 15 March 2019 11:58 CET | Original file | - |
| article pdf uploaded. | 19 February 2016 09:34 CET | Version of Record | https://www.mdpi.com/2073-4360/8/2/55/pdf |
| article xml uploaded. | 19 February 2016 09:34 CET | Original file | https://www.mdpi.com/2073-4360/8/2/55/xml |
