| article html file updated | 30 August 2025 11:24 CEST | Update | https://www.mdpi.com/2218-1997/5/2/44 |
| article html file updated | 18 July 2022 01:19 CEST | Update | N/A |
| article html file updated | 11 February 2020 11:11 CET | Update | N/A |
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| article html file updated | 24 January 2019 07:08 CET | Original file | N/A |
| article pdf uploaded. | 24 January 2019 07:06 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/2/44/pdf |
| article xml uploaded. | 24 January 2019 07:06 CET | Update | https://www.mdpi.com/2218-1997/5/2/44/xml |
| article xml file uploaded | 24 January 2019 07:06 CET | Update | N/A |
| article pdf uploaded. | 23 January 2019 17:08 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/2/44/pdf-vor |
| article pdf uploaded. | 23 January 2019 16:47 CET | Version of Record | https://www.mdpi.com/2218-1997/5/2/44/pdf-vor |
| article xml file uploaded | 23 January 2019 16:47 CET | Original file | N/A |
