| article html file updated | 31 August 2025 05:34 CEST | Update | https://www.mdpi.com/2227-9067/6/12/133 |
| article html file updated | 19 July 2022 22:40 CEST | Update | - |
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| article html file updated | 31 December 2019 00:27 CET | Update | - |
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| article pdf uploaded. | 19 December 2019 03:07 CET | Updated version of record | https://www.mdpi.com/2227-9067/6/12/133/pdf |
| article xml uploaded. | 19 December 2019 03:07 CET | Update | https://www.mdpi.com/2227-9067/6/12/133/xml |
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| article pdf uploaded. | 2 December 2019 16:58 CET | Version of Record | https://www.mdpi.com/2227-9067/6/12/133/pdf-vor |
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