| article html file updated | 7 February 2020 07:27 CET | Update | https://www.mdpi.com/1999-4907/7/4/86 |
| article html file updated | 5 May 2019 18:16 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:15 CET | Update | N/A |
| article html file updated | 28 April 2016 12:22 CEST | Update | N/A |
| article html file updated | 19 April 2016 09:59 CEST | Original file | N/A |
| article xml uploaded. | 19 April 2016 09:57 CEST | Original file | https://www.mdpi.com/1999-4907/7/4/86/xml |
| article pdf uploaded. | 19 April 2016 09:57 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/4/86/pdf |
