| article html file updated | 14 August 2026 13:58 CEST | Update | https://www.mdpi.com/1424-8220/17/4/909 |
| article html file updated | 8 February 2020 04:01 CET | Update | N/A |
| article html file updated | 24 September 2019 10:20 CEST | Update | N/A |
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| article html file updated | 21 April 2017 09:53 CEST | Original file | N/A |
| article xml uploaded. | 21 April 2017 09:52 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/909/xml |
| article pdf uploaded. | 21 April 2017 09:52 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/909/pdf |
| article pdf uploaded. | 20 April 2017 13:41 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/909/pdf-vor |
