| article html file updated | 7 February 2020 06:56 CET | Update | https://www.mdpi.com/2079-4991/6/4/63 |
| article html file updated | 5 May 2019 19:22 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:14 CET | Update | N/A |
| article html file updated | 24 February 2017 10:25 CET | Update | N/A |
| article html file updated | 10 February 2017 03:57 CET | Update | N/A |
| article html file updated | 29 April 2016 06:12 CEST | Update | N/A |
| article html file updated | 7 April 2016 10:54 CEST | Original file | N/A |
| article xml uploaded. | 7 April 2016 10:53 CEST | Original file | https://www.mdpi.com/2079-4991/6/4/63/xml |
| article pdf uploaded. | 7 April 2016 10:53 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/63/pdf |
