| article html file updated | 8 February 2020 03:13 CET | Update | https://www.mdpi.com/1999-4907/8/4/116 |
| article html file updated | 24 September 2019 05:47 CEST | Update | - |
| article html file updated | 4 May 2019 02:54 CEST | Update | - |
| article html file updated | 28 April 2017 06:42 CEST | Update | - |
| article html file updated | 10 April 2017 09:29 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 09:27 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/116/xml |
| article pdf uploaded. | 10 April 2017 09:27 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/116/pdf |
