| article html file updated | 30 August 2025 02:01 CEST | Update | https://www.mdpi.com/2227-7102/7/4/90 |
| article html file updated | 16 July 2022 08:02 CEST | Update | N/A |
| article html file updated | 9 February 2020 00:33 CET | Update | N/A |
| article html file updated | 29 September 2019 08:00 CEST | Update | N/A |
| article html file updated | 2 May 2019 07:32 CEST | Update | N/A |
| article html file updated | 18 April 2019 05:23 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:22 CET | Update | N/A |
| article html file updated | 19 December 2017 13:01 CET | Original file | N/A |
| article xml uploaded. | 19 December 2017 13:00 CET | Original file | https://www.mdpi.com/2227-7102/7/4/90/xml |
| article pdf uploaded. | 19 December 2017 13:00 CET | Version of Record | https://www.mdpi.com/2227-7102/7/4/90/pdf |
