| article html file updated | 29 August 2025 22:44 CEST | Update | https://www.mdpi.com/1999-4907/7/2/47 |
| article html file updated | 16 July 2022 01:48 CEST | Update | - |
| article html file updated | 7 February 2020 04:48 CET | Update | - |
| article html file updated | 5 May 2019 23:46 CEST | Update | - |
| article html file updated | 26 March 2019 21:15 CET | Original file | - |
| article pdf uploaded. | 20 February 2016 10:54 CET | Version of Record | https://www.mdpi.com/1999-4907/7/2/47/pdf |
| article xml uploaded. | 20 February 2016 10:54 CET | Original file | https://www.mdpi.com/1999-4907/7/2/47/xml |
