| article html file updated | 8 February 2020 23:25 CET | Update | https://www.mdpi.com/2220-9964/6/12/400 |
| article html file updated | 29 September 2019 01:22 CEST | Update | - |
| article html file updated | 2 May 2019 10:02 CEST | Update | - |
| article html file updated | 18 April 2019 07:41 CEST | Update | - |
| article html file updated | 2 January 2018 18:49 CET | Update | - |
| article html file updated | 7 December 2017 11:22 CET | Original file | - |
| article xml uploaded. | 7 December 2017 11:20 CET | Update | https://www.mdpi.com/2220-9964/6/12/400/xml |
| article xml uploaded. | 7 December 2017 11:20 CET | Original file | - |
| article pdf uploaded. | 7 December 2017 11:20 CET | Version of Record | https://www.mdpi.com/2220-9964/6/12/400/pdf |
