| article html file updated | 31 August 2025 03:53 CEST | Update | https://www.mdpi.com/2227-9709/6/4/47 |
| article html file updated | 20 July 2022 00:29 CEST | Update | N/A |
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| article html file updated | 31 December 2019 08:52 CET | Update | N/A |
| article html file updated | 14 November 2019 10:12 CET | Original file | N/A |
| article pdf uploaded. | 14 November 2019 10:11 CET | Updated version of record | https://www.mdpi.com/2227-9709/6/4/47/pdf |
| article xml uploaded. | 14 November 2019 10:11 CET | Update | https://www.mdpi.com/2227-9709/6/4/47/xml |
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| article pdf uploaded. | 1 November 2019 11:24 CET | Version of Record | https://www.mdpi.com/2227-9709/6/4/47/pdf-vor |
| article xml file uploaded | 1 November 2019 11:24 CET | Original file | N/A |
