| article html file updated | 30 August 2025 09:50 CEST | Update | https://www.mdpi.com/2079-9721/6/4/110 |
| article html file updated | 17 July 2022 14:59 CEST | Update | N/A |
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| article html file updated | 26 December 2018 22:02 CET | Update | N/A |
| article html file updated | 13 December 2018 09:14 CET | Original file | N/A |
| article pdf uploaded. | 13 December 2018 09:13 CET | Updated version of record | https://www.mdpi.com/2079-9721/6/4/110/pdf |
| article xml uploaded. | 13 December 2018 09:13 CET | Update | https://www.mdpi.com/2079-9721/6/4/110/xml |
| article xml file uploaded | 13 December 2018 09:13 CET | Update | N/A |
| article pdf uploaded. | 11 December 2018 16:41 CET | Updated version of record | https://www.mdpi.com/2079-9721/6/4/110/pdf-vor |
| article pdf uploaded. | 11 December 2018 16:15 CET | Version of Record | https://www.mdpi.com/2079-9721/6/4/110/pdf-vor |
| article xml file uploaded | 11 December 2018 16:15 CET | Original file | N/A |
