| article html file updated | 8 February 2020 09:02 CET | Update | https://www.mdpi.com/2220-9964/6/7/191 |
| article html file updated | 25 September 2019 12:24 CEST | Update | - |
| article html file updated | 3 May 2019 16:02 CEST | Update | - |
| article html file updated | 31 July 2017 07:36 CEST | Update | - |
| article html file updated | 23 June 2017 10:08 CEST | Original file | - |
| article xml uploaded. | 23 June 2017 08:12 CEST | Update | https://www.mdpi.com/2220-9964/6/7/191/xml |
| article pdf uploaded. | 23 June 2017 08:12 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/7/191/pdf |
