| article html file updated | 24 December 2025 14:35 CET | Update | https://www.mdpi.com/2218-1997/5/1/31 |
| article html file updated | 30 August 2025 11:07 CEST | Update | N/A |
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| article html file updated | 24 January 2019 02:49 CET | Original file | N/A |
| article pdf uploaded. | 24 January 2019 02:48 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/1/31/pdf |
| article xml uploaded. | 24 January 2019 02:48 CET | Update | https://www.mdpi.com/2218-1997/5/1/31/xml |
| article xml file uploaded | 24 January 2019 02:48 CET | Update | N/A |
| article pdf uploaded. | 16 January 2019 14:56 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/1/31/pdf-vor |
| article xml file uploaded | 16 January 2019 14:54 CET | Original file | N/A |
| article pdf uploaded. | 16 January 2019 14:54 CET | Version of Record | https://www.mdpi.com/2218-1997/5/1/31/pdf-vor |
