| article html file updated | 15 August 2026 13:27 CEST | Update | https://www.mdpi.com/1996-1073/12/1/50 |
| article html file updated | 30 August 2025 10:19 CEST | Update | N/A |
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| article pdf uploaded. | 28 January 2019 07:10 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/1/50/pdf |
| article html file updated | 16 January 2019 05:09 CET | Update | N/A |
| article html file updated | 25 December 2018 09:55 CET | Original file | N/A |
| article pdf uploaded. | 25 December 2018 09:54 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/1/50/pdf-vor |
| article xml uploaded. | 25 December 2018 09:54 CET | Update | https://www.mdpi.com/1996-1073/12/1/50/xml |
| article xml file uploaded | 25 December 2018 09:54 CET | Update | N/A |
| article pdf uploaded. | 24 December 2018 16:26 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/1/50/pdf-vor |
| article xml file uploaded | 24 December 2018 16:25 CET | Original file | N/A |
| article pdf uploaded. | 24 December 2018 16:25 CET | Version of Record | https://www.mdpi.com/1996-1073/12/1/50/pdf-vor |
