| article html file updated | 31 August 2025 15:52 CEST | Update | https://www.mdpi.com/2218-1997/6/4/49 |
| article html file updated | 21 July 2022 00:21 CEST | Update | - |
| article html file updated | 30 March 2020 11:18 CEST | Original file | - |
| article pdf uploaded. | 30 March 2020 11:17 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/4/49/pdf |
| article xml uploaded. | 30 March 2020 11:17 CEST | Update | https://www.mdpi.com/2218-1997/6/4/49/xml |
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