| article html file updated | 7 February 2020 16:02 CET | Update | https://www.mdpi.com/2076-3425/6/4/46 |
| article html file updated | 22 September 2019 02:20 CEST | Update | N/A |
| article html file updated | 5 May 2019 02:13 CEST | Update | N/A |
| article html file updated | 27 December 2016 02:17 CET | Update | N/A |
| article html file updated | 8 October 2016 11:30 CEST | Original file | N/A |
| article xml uploaded. | 8 October 2016 11:29 CEST | Original file | https://www.mdpi.com/2076-3425/6/4/46/xml |
| article pdf uploaded. | 8 October 2016 11:29 CEST | Version of Record | https://www.mdpi.com/2076-3425/6/4/46/pdf |
