| article html file updated | 8 February 2020 17:57 CET | Update | https://www.mdpi.com/2227-7080/5/4/65 |
| article html file updated | 27 September 2019 14:33 CEST | Update | N/A |
| article html file updated | 2 May 2019 22:24 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:12 CET | Update | N/A |
| article html file updated | 12 October 2017 06:25 CEST | Original file | N/A |
| article xml uploaded. | 12 October 2017 06:24 CEST | Original file | https://www.mdpi.com/2227-7080/5/4/65/xml |
| article pdf uploaded. | 12 October 2017 06:24 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/4/65/pdf |
| article pdf uploaded. | 8 October 2017 11:03 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/4/65/pdf-vor |
