| article html file updated | 1 September 2025 14:58 CEST | Update | https://www.mdpi.com/2306-5710/6/4/68 |
| article html file updated | 23 July 2022 03:25 CEST | Update | - |
| article html file updated | 1 December 2020 12:29 CET | Original file | - |
| article pdf uploaded. | 1 December 2020 12:28 CET | Version of Record | https://www.mdpi.com/2306-5710/6/4/68/pdf |
| article xml uploaded. | 1 December 2020 12:28 CET | Update | https://www.mdpi.com/2306-5710/6/4/68/xml |
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