| article html file updated | 8 February 2020 10:09 CET | Update | https://www.mdpi.com/2220-9964/6/7/204 |
| article html file updated | 25 September 2019 18:27 CEST | Update | - |
| article html file updated | 3 May 2019 13:56 CEST | Update | - |
| article html file updated | 31 July 2017 07:38 CEST | Update | - |
| article html file updated | 5 July 2017 15:22 CEST | Original file | - |
| article xml uploaded. | 5 July 2017 15:20 CEST | Original file | https://www.mdpi.com/2220-9964/6/7/204/xml |
| article pdf uploaded. | 5 July 2017 15:20 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/7/204/pdf |
