| article html file updated | 8 February 2020 08:01 CET | Update | https://www.mdpi.com/2073-4352/7/6/168 |
| article html file updated | 25 September 2019 07:01 CEST | Update | - |
| article html file updated | 3 May 2019 17:57 CEST | Update | - |
| article html file updated | 30 June 2017 22:42 CEST | Update | - |
| article html file updated | 11 June 2017 04:28 CEST | Original file | - |
| article xml uploaded. | 11 June 2017 04:26 CEST | Original file | https://www.mdpi.com/2073-4352/7/6/168/xml |
| article pdf uploaded. | 11 June 2017 04:26 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/6/168/pdf |
