| article html file updated | 7 February 2020 16:35 CET | Update | https://www.mdpi.com/2076-3921/5/4/36 |
| article html file updated | 22 September 2019 03:21 CEST | Update | N/A |
| article html file updated | 5 May 2019 01:12 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:55 CET | Update | N/A |
| article html file updated | 19 October 2016 08:44 CEST | Original file | N/A |
| article xml uploaded. | 19 October 2016 08:43 CEST | Original file | https://www.mdpi.com/2076-3921/5/4/36/xml |
| article pdf uploaded. | 19 October 2016 08:43 CEST | Version of Record | https://www.mdpi.com/2076-3921/5/4/36/pdf |
