| article html file updated | 30 August 2025 10:15 CEST | Update | https://www.mdpi.com/2218-273X/9/1/4 |
| article html file updated | 17 July 2022 17:59 CEST | Update | - |
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| article html file updated | 25 December 2018 11:27 CET | Original file | - |
| article pdf uploaded. | 25 December 2018 11:26 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/4/pdf |
| article xml uploaded. | 25 December 2018 11:26 CET | Update | https://www.mdpi.com/2218-273X/9/1/4/xml |
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| article pdf uploaded. | 21 December 2018 18:08 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/4/pdf-vor |
| article pdf uploaded. | 21 December 2018 18:07 CET | Version of Record | https://www.mdpi.com/2218-273X/9/1/4/pdf-vor |
| article xml file uploaded | 21 December 2018 18:07 CET | Original file | - |
