| article html file updated | 14 August 2026 18:45 CEST | Update | https://www.mdpi.com/2218-273X/7/4/77 |
| article html file updated | 30 August 2025 01:34 CEST | Update | N/A |
| article html file updated | 16 July 2022 07:08 CEST | Update | N/A |
| article html file updated | 8 February 2020 20:00 CET | Update | N/A |
| article html file updated | 28 September 2019 03:45 CEST | Update | N/A |
| article html file updated | 2 May 2019 17:42 CEST | Update | N/A |
| article html file updated | 14 March 2018 17:48 CET | Update | N/A |
| article html file updated | 3 January 2018 09:03 CET | Update | N/A |
| article html file updated | 1 November 2017 09:13 CET | Original file | N/A |
| article xml uploaded. | 1 November 2017 09:12 CET | Original file | https://www.mdpi.com/2218-273X/7/4/77/xml |
| article pdf uploaded. | 1 November 2017 09:12 CET | Version of Record | https://www.mdpi.com/2218-273X/7/4/77/pdf |
