| article html file updated | 8 February 2020 13:34 CET | Update | https://www.mdpi.com/2220-9964/6/8/251 |
| article html file updated | 26 September 2019 13:12 CEST | Update | - |
| article html file updated | 3 May 2019 06:55 CEST | Update | - |
| article html file updated | 27 March 2019 20:52 CET | Update | - |
| article html file updated | 1 September 2017 07:11 CEST | Update | - |
| article html file updated | 15 August 2017 10:39 CEST | Original file | - |
| article xml uploaded. | 15 August 2017 10:38 CEST | Update | https://www.mdpi.com/2220-9964/6/8/251/xml |
| article xml uploaded. | 15 August 2017 10:38 CEST | Original file | - |
| article pdf uploaded. | 15 August 2017 10:38 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/8/251/pdf |
