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| article html file updated | 17 July 2022 20:43 CEST | Update | N/A |
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| article html file updated | 4 January 2019 10:00 CET | Original file | N/A |
| article pdf uploaded. | 4 January 2019 09:58 CET | Updated version of record | https://www.mdpi.com/2227-9059/7/1/4/pdf |
| article xml uploaded. | 4 January 2019 09:58 CET | Update | https://www.mdpi.com/2227-9059/7/1/4/xml |
| article xml file uploaded | 4 January 2019 09:58 CET | Update | N/A |
| article pdf uploaded. | 3 January 2019 16:08 CET | Updated version of record | https://www.mdpi.com/2227-9059/7/1/4/pdf-vor |
| article pdf uploaded. | 3 January 2019 16:07 CET | Version of Record | https://www.mdpi.com/2227-9059/7/1/4/pdf-vor |
| article xml file uploaded | 3 January 2019 16:07 CET | Original file | N/A |