| article html file updated | 31 August 2025 16:23 CEST | Update | https://www.mdpi.com/2226-4787/8/2/60 |
| article html file updated | 21 July 2022 00:53 CEST | Update | - |
| article html file updated | 4 June 2020 05:53 CEST | Update | - |
| article pdf uploaded. | 4 June 2020 05:52 CEST | Updated version of record | https://www.mdpi.com/2226-4787/8/2/60/pdf |
| article xml uploaded. | 4 June 2020 05:52 CEST | Update | https://www.mdpi.com/2226-4787/8/2/60/xml |
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