| article html file updated | 7 February 2020 23:20 CET | Update | https://www.mdpi.com/2220-9964/6/2/43 |
| article html file updated | 23 September 2019 07:35 CEST | Update | - |
| article html file updated | 4 May 2019 11:23 CEST | Update | - |
| article html file updated | 1 March 2017 03:48 CET | Update | - |
| article html file updated | 14 February 2017 10:22 CET | Original file | - |
| article xml uploaded. | 14 February 2017 10:21 CET | Update | https://www.mdpi.com/2220-9964/6/2/43/xml |
| article xml uploaded. | 14 February 2017 10:21 CET | Original file | - |
| article pdf uploaded. | 14 February 2017 10:21 CET | Version of Record | https://www.mdpi.com/2220-9964/6/2/43/pdf |
