| article html file updated | 31 August 2025 04:15 CEST | Update | https://www.mdpi.com/2227-9032/7/4/139 |
| article html file updated | 20 July 2022 00:05 CEST | Update | - |
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| article html file updated | 30 December 2019 09:53 CET | Update | - |
| article html file updated | 7 November 2019 12:34 CET | Original file | - |
| article pdf uploaded. | 7 November 2019 12:32 CET | Version of Record | https://www.mdpi.com/2227-9032/7/4/139/pdf |
| article xml uploaded. | 7 November 2019 12:32 CET | Update | https://www.mdpi.com/2227-9032/7/4/139/xml |
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