| article html file updated | 7 February 2020 06:25 CET | Update | https://www.mdpi.com/1999-4907/7/4/74 |
| article html file updated | 5 May 2019 20:23 CEST | Update | - |
| article html file updated | 27 March 2019 00:21 CET | Update | - |
| article html file updated | 28 April 2016 12:16 CEST | Update | - |
| article html file updated | 25 March 2016 10:00 CET | Original file | - |
| article xml uploaded. | 25 March 2016 09:59 CET | Original file | https://www.mdpi.com/1999-4907/7/4/74/xml |
| article pdf uploaded. | 25 March 2016 09:59 CET | Version of Record | https://www.mdpi.com/1999-4907/7/4/74/pdf |
