| article html file updated | 8 February 2020 07:13 CET | Update | https://www.mdpi.com/2073-4344/7/6/171 |
| article html file updated | 25 September 2019 02:57 CEST | Update | - |
| article html file updated | 3 May 2019 19:27 CEST | Update | - |
| article html file updated | 27 June 2017 09:58 CEST | Update | - |
| article html file updated | 2 June 2017 04:46 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 04:45 CEST | Update | https://www.mdpi.com/2073-4344/7/6/171/xml |
| article pdf uploaded. | 2 June 2017 04:45 CEST | Updated version of record | https://www.mdpi.com/2073-4344/7/6/171/pdf |
| article pdf uploaded. | 1 June 2017 14:41 CEST | Version of Record | https://www.mdpi.com/2073-4344/7/6/171/pdf-vor |
