| article html file updated | 31 August 2025 08:22 CEST | Update | https://www.mdpi.com/2304-8158/9/1/60 |
| article html file updated | 19 July 2022 19:57 CEST | Update | - |
| article html file updated | 15 February 2020 00:44 CET | Update | - |
| article html file updated | 7 February 2020 04:51 CET | Update | - |
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| article pdf uploaded. | 21 January 2020 12:52 CET | Updated version of record | https://www.mdpi.com/2304-8158/9/1/60/pdf |
| article xml uploaded. | 21 January 2020 12:52 CET | Update | https://www.mdpi.com/2304-8158/9/1/60/xml |
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| article pdf uploaded. | 7 January 2020 11:17 CET | Version of Record | https://www.mdpi.com/2304-8158/9/1/60/pdf-vor |
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