| article html file updated | 31 August 2025 06:21 CEST | Update | https://www.mdpi.com/2227-9091/7/4/121 |
| article html file updated | 19 July 2022 21:54 CEST | Update | - |
| article html file updated | 14 February 2020 17:57 CET | Update | - |
| article html file updated | 31 December 2019 00:26 CET | Update | - |
| article html file updated | 13 December 2019 03:46 CET | Original file | - |
| article pdf uploaded. | 13 December 2019 03:45 CET | Updated version of record | https://www.mdpi.com/2227-9091/7/4/121/pdf |
| article xml uploaded. | 13 December 2019 03:45 CET | Update | https://www.mdpi.com/2227-9091/7/4/121/xml |
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| article pdf uploaded. | 11 December 2019 17:16 CET | Version of Record | https://www.mdpi.com/2227-9091/7/4/121/pdf-vor |
| article xml file uploaded | 11 December 2019 17:16 CET | Original file | - |
