| article html file updated | 9 February 2020 03:28 CET | Update | https://www.mdpi.com/2073-4344/8/1/33 |
| article html file updated | 30 September 2019 00:35 CEST | Update | - |
| article html file updated | 2 May 2019 01:25 CEST | Update | - |
| article html file updated | 17 April 2019 23:44 CEST | Update | - |
| article html file updated | 28 March 2019 16:31 CET | Update | - |
| article html file updated | 1 February 2018 10:13 CET | Update | - |
| article html file updated | 18 January 2018 09:17 CET | Original file | - |
| article xml uploaded. | 18 January 2018 09:15 CET | Update | https://www.mdpi.com/2073-4344/8/1/33/xml |
| article xml uploaded. | 18 January 2018 09:15 CET | Original file | - |
| article pdf uploaded. | 18 January 2018 09:15 CET | Version of Record | https://www.mdpi.com/2073-4344/8/1/33/pdf |
