| article html file updated | 8 February 2020 00:48 CET | Update | https://www.mdpi.com/2075-1702/5/1/8 |
| article html file updated | 23 September 2019 16:00 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:11 CEST | Update | N/A |
| article html file updated | 30 March 2017 05:39 CEST | Update | N/A |
| article html file updated | 4 March 2017 12:19 CET | Original file | N/A |
| article xml uploaded. | 4 March 2017 12:17 CET | Original file | https://www.mdpi.com/2075-1702/5/1/8/xml |
| article pdf uploaded. | 4 March 2017 12:17 CET | Version of Record | https://www.mdpi.com/2075-1702/5/1/8/pdf |
