| article html file updated | 31 August 2025 06:39 CEST | Update | https://www.mdpi.com/2223-7747/8/12/609 |
| article html file updated | 19 July 2022 21:37 CEST | Update | N/A |
| article html file updated | 14 February 2020 18:59 CET | Update | N/A |
| article html file updated | 31 December 2019 03:26 CET | Update | N/A |
| article html file updated | 16 December 2019 08:59 CET | Original file | N/A |
| article pdf uploaded. | 16 December 2019 08:58 CET | Version of Record | https://www.mdpi.com/2223-7747/8/12/609/pdf |
| article xml uploaded. | 16 December 2019 08:58 CET | Update | https://www.mdpi.com/2223-7747/8/12/609/xml |
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