| article html file updated | 14 August 2026 18:37 CEST | Update | https://www.mdpi.com/2071-1050/9/11/1968 |
| article html file updated | 30 August 2025 01:32 CEST | Update | N/A |
| article html file updated | 16 July 2022 07:03 CEST | Update | N/A |
| article html file updated | 8 February 2020 19:36 CET | Update | N/A |
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| article html file updated | 30 November 2017 12:15 CET | Update | N/A |
| article html file updated | 1 November 2017 09:24 CET | Original file | N/A |
| article xml uploaded. | 1 November 2017 09:23 CET | Update | https://www.mdpi.com/2071-1050/9/11/1968/xml |
| article xml uploaded. | 1 November 2017 09:23 CET | Original file | N/A |
| article pdf uploaded. | 1 November 2017 09:23 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/11/1968/pdf |
| article pdf uploaded. | 27 October 2017 11:27 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/11/1968/pdf-vor |
