| article html file updated | 15 August 2026 05:13 CEST | Update | https://www.mdpi.com/1996-1073/11/8/1991 |
| article html file updated | 30 August 2025 05:42 CEST | Update | N/A |
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| article html file updated | 10 February 2020 03:50 CET | Update | N/A |
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| article html file updated | 28 August 2018 03:50 CEST | Update | N/A |
| article html file updated | 3 August 2018 08:20 CEST | Original file | N/A |
| article pdf uploaded. | 3 August 2018 08:16 CEST | Updated version of record | https://www.mdpi.com/1996-1073/11/8/1991/pdf |
| article xml uploaded. | 3 August 2018 08:16 CEST | Update | https://www.mdpi.com/1996-1073/11/8/1991/xml |
| article xml file uploaded | 3 August 2018 08:16 CEST | Update | N/A |
| article pdf uploaded. | 31 July 2018 16:23 CEST | Updated version of record | https://www.mdpi.com/1996-1073/11/8/1991/pdf-vor |
| article pdf uploaded. | 31 July 2018 16:15 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/8/1991/pdf-vor |
| article xml file uploaded | 31 July 2018 16:15 CEST | Original file | N/A |