| article html file updated | 30 August 2025 07:40 CEST | Update | https://www.mdpi.com/2218-2004/6/4/56 |
| article html file updated | 17 July 2022 04:35 CEST | Update | N/A |
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| article html file updated | 26 December 2018 22:47 CET | Update | N/A |
| article html file updated | 12 October 2018 03:52 CEST | Update | N/A |
| article pdf uploaded. | 12 October 2018 03:52 CEST | Updated version of record | https://www.mdpi.com/2218-2004/6/4/56/pdf |
| article xml uploaded. | 12 October 2018 03:52 CEST | Update | https://www.mdpi.com/2218-2004/6/4/56/xml |
| article xml file uploaded | 12 October 2018 03:52 CEST | Update | N/A |
| article html file updated | 11 October 2018 06:24 CEST | Original file | N/A |
| article pdf uploaded. | 11 October 2018 06:23 CEST | Version of Record | https://www.mdpi.com/2218-2004/6/4/56/pdf-vor |
| article xml uploaded. | 11 October 2018 06:23 CEST | Update | N/A |
| article xml file uploaded | 11 October 2018 06:23 CEST | Original file | N/A |
