| article html file updated | 8 February 2020 00:18 CET | Update | https://www.mdpi.com/2227-7080/5/1/9 |
| article html file updated | 23 September 2019 13:08 CEST | Update | N/A |
| article html file updated | 4 May 2019 09:21 CEST | Update | N/A |
| article html file updated | 30 March 2017 09:01 CEST | Update | N/A |
| article html file updated | 27 February 2017 07:43 CET | Original file | N/A |
| article xml uploaded. | 27 February 2017 07:42 CET | Update | https://www.mdpi.com/2227-7080/5/1/9/xml |
| article xml uploaded. | 27 February 2017 07:42 CET | Original file | N/A |
| article pdf uploaded. | 27 February 2017 07:42 CET | Updated version of record | https://www.mdpi.com/2227-7080/5/1/9/pdf |
| article pdf uploaded. | 25 February 2017 12:42 CET | Version of Record | https://www.mdpi.com/2227-7080/5/1/9/pdf-vor |
