| article html file updated | 30 August 2025 01:43 CEST | Update | https://www.mdpi.com/2227-7390/5/4/64 |
| article html file updated | 16 July 2022 07:27 CEST | Update | - |
| article html file updated | 8 February 2020 21:29 CET | Update | - |
| article html file updated | 28 September 2019 13:24 CEST | Update | - |
| article html file updated | 2 May 2019 14:21 CEST | Update | - |
| article html file updated | 18 April 2019 12:01 CEST | Update | - |
| article html file updated | 2 January 2018 11:35 CET | Update | - |
| article html file updated | 17 November 2017 14:43 CET | Original file | - |
| article xml uploaded. | 17 November 2017 14:42 CET | Original file | https://www.mdpi.com/2227-7390/5/4/64/xml |
| article pdf uploaded. | 17 November 2017 14:42 CET | Version of Record | https://www.mdpi.com/2227-7390/5/4/64/pdf |
