| article html file updated | 8 February 2020 08:41 CET | Update | https://www.mdpi.com/2227-9709/4/2/14 |
| article html file updated | 25 September 2019 10:29 CEST | Update | N/A |
| article html file updated | 3 May 2019 16:43 CEST | Update | N/A |
| article html file updated | 27 October 2017 10:25 CEST | Update | N/A |
| article html file updated | 20 June 2017 04:19 CEST | Original file | N/A |
| article xml uploaded. | 20 June 2017 04:18 CEST | Original file | https://www.mdpi.com/2227-9709/4/2/14/xml |
| article pdf uploaded. | 20 June 2017 04:18 CEST | Updated version of record | https://www.mdpi.com/2227-9709/4/2/14/pdf |
| article pdf uploaded. | 19 June 2017 11:50 CEST | Version of Record | https://www.mdpi.com/2227-9709/4/2/14/pdf-vor |
