| article html file updated | 10 February 2026 08:15 CET | Update | https://www.mdpi.com/1996-1073/9/8/643 |
| article html file updated | 29 August 2025 23:30 CEST | Update | N/A |
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| article html file updated | 7 February 2020 13:34 CET | Update | N/A |
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| article html file updated | 19 August 2016 10:31 CEST | Original file | N/A |
| article xml uploaded. | 19 August 2016 10:29 CEST | Update | https://www.mdpi.com/1996-1073/9/8/643/xml |
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| article xml uploaded. | 19 August 2016 10:29 CEST | Update | N/A |
| article xml uploaded. | 19 August 2016 10:29 CEST | Original file | N/A |
| article pdf uploaded. | 19 August 2016 10:29 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/643/pdf |
