| article html file updated | 14 August 2026 17:08 CEST | Update | https://www.mdpi.com/1424-8220/17/9/1998 |
| article html file updated | 30 August 2025 01:05 CEST | Update | N/A |
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| article html file updated | 1 September 2017 08:40 CEST | Original file | N/A |
| article xml uploaded. | 1 September 2017 07:55 CEST | Original file | https://www.mdpi.com/1424-8220/17/9/1998/xml |
| article pdf uploaded. | 1 September 2017 07:55 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/9/1998/pdf |
| article pdf uploaded. | 31 August 2017 11:58 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/9/1998/pdf-vor |
