| article html file updated | 7 February 2020 18:09 CET | Update | https://www.mdpi.com/2227-7080/4/4/36 |
| article html file updated | 4 May 2019 22:15 CEST | Update | N/A |
| article html file updated | 17 November 2016 12:47 CET | Original file | N/A |
| article xml uploaded. | 17 November 2016 12:46 CET | Update | https://www.mdpi.com/2227-7080/4/4/36/xml |
| article xml uploaded. | 17 November 2016 12:46 CET | Original file | N/A |
| article pdf uploaded. | 17 November 2016 12:46 CET | Version of Record | https://www.mdpi.com/2227-7080/4/4/36/pdf |
