| article html file updated | 7 February 2020 21:44 CET | Update | https://www.mdpi.com/2073-4344/7/1/33 |
| article html file updated | 22 September 2019 22:51 CEST | Update | - |
| article html file updated | 4 May 2019 14:37 CEST | Update | - |
| article html file updated | 7 February 2017 04:10 CET | Update | - |
| article html file updated | 18 January 2017 13:07 CET | Original file | - |
| article xml uploaded. | 18 January 2017 13:06 CET | Update | https://www.mdpi.com/2073-4344/7/1/33/xml |
| article xml uploaded. | 18 January 2017 13:06 CET | Original file | - |
| article pdf uploaded. | 18 January 2017 13:06 CET | Version of Record | https://www.mdpi.com/2073-4344/7/1/33/pdf |
