| article html file updated | 7 February 2020 21:10 CET | Update | https://www.mdpi.com/2073-4433/8/1/7 |
| article html file updated | 22 September 2019 19:55 CEST | Update | - |
| article html file updated | 4 May 2019 15:57 CEST | Update | - |
| article html file updated | 7 February 2017 03:32 CET | Update | - |
| article html file updated | 11 January 2017 05:07 CET | Original file | - |
| article xml uploaded. | 11 January 2017 05:06 CET | Update | https://www.mdpi.com/2073-4433/8/1/7/xml |
| article xml uploaded. | 11 January 2017 05:06 CET | Original file | - |
| article pdf uploaded. | 11 January 2017 05:06 CET | Version of Record | https://www.mdpi.com/2073-4433/8/1/7/pdf |
