| article html file updated | 31 August 2025 05:28 CEST | Update | https://www.mdpi.com/2227-7102/9/4/285 |
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| article html file updated | 14 February 2020 14:47 CET | Update | - |
| article html file updated | 18 December 2019 12:58 CET | Original file | - |
| article pdf uploaded. | 18 December 2019 12:56 CET | Updated version of record | https://www.mdpi.com/2227-7102/9/4/285/pdf |
| article xml uploaded. | 18 December 2019 12:56 CET | Update | https://www.mdpi.com/2227-7102/9/4/285/xml |
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| article pdf uploaded. | 1 December 2019 09:00 CET | Version of Record | https://www.mdpi.com/2227-7102/9/4/285/pdf-vor |
| article xml file uploaded | 1 December 2019 09:00 CET | Original file | - |
