| article html file updated | 29 August 2025 23:26 CEST | Update | https://www.mdpi.com/2227-9032/4/3/47 |
| article html file updated | 16 July 2022 02:59 CEST | Update | - |
| article html file updated | 7 February 2020 12:38 CET | Update | - |
| article html file updated | 21 September 2019 22:09 CEST | Update | - |
| article html file updated | 5 May 2019 08:24 CEST | Update | - |
| article html file updated | 27 March 2019 12:01 CET | Update | - |
| article html file updated | 29 September 2016 12:13 CEST | Update | - |
| article html file updated | 1 August 2016 09:24 CEST | Original file | - |
| article xml uploaded. | 1 August 2016 09:23 CEST | Original file | https://www.mdpi.com/2227-9032/4/3/47/xml |
| article pdf uploaded. | 1 August 2016 09:23 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/3/47/pdf |