| article html file updated | 7 February 2020 23:14 CET | Update | https://www.mdpi.com/2079-6439/5/1/6 |
| article html file updated | 23 September 2019 07:04 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:34 CEST | Update | N/A |
| article html file updated | 30 March 2017 03:40 CEST | Update | N/A |
| article html file updated | 13 February 2017 10:27 CET | Original file | N/A |
| article xml uploaded. | 13 February 2017 10:25 CET | Original file | https://www.mdpi.com/2079-6439/5/1/6/xml |
| article pdf uploaded. | 13 February 2017 10:25 CET | Version of Record | https://www.mdpi.com/2079-6439/5/1/6/pdf |
