| article html file updated | 29 August 2025 23:19 CEST | Update | https://www.mdpi.com/2227-9032/4/3/40 |
| article html file updated | 16 July 2022 02:48 CEST | Update | - |
| article html file updated | 7 February 2020 11:22 CET | Update | - |
| article html file updated | 5 May 2019 10:45 CEST | Update | - |
| article html file updated | 27 March 2019 09:40 CET | Update | - |
| article html file updated | 29 September 2016 12:13 CEST | Update | - |
| article html file updated | 8 July 2016 08:18 CEST | Original file | - |
| article xml uploaded. | 8 July 2016 08:17 CEST | Original file | https://www.mdpi.com/2227-9032/4/3/40/xml |
| article pdf uploaded. | 8 July 2016 08:17 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/3/40/pdf |