| article html file updated | 31 August 2025 14:36 CEST | Update | https://www.mdpi.com/2227-9032/8/1/60 |
| article html file updated | 20 July 2022 23:06 CEST | Update | - |
| article html file updated | 1 April 2020 10:52 CEST | Update | - |
| article html file updated | 21 March 2020 13:40 CET | Original file | - |
| article pdf uploaded. | 21 March 2020 13:39 CET | Updated version of record | https://www.mdpi.com/2227-9032/8/1/60/pdf |
| article xml uploaded. | 21 March 2020 13:39 CET | Update | https://www.mdpi.com/2227-9032/8/1/60/xml |
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| article pdf uploaded. | 16 March 2020 16:11 CET | Updated version of record | https://www.mdpi.com/2227-9032/8/1/60/pdf-vor |
| article xml file uploaded | 16 March 2020 16:11 CET | Update | - |
| article pdf uploaded. | 16 March 2020 16:11 CET | Version of Record | https://www.mdpi.com/2227-9032/8/1/60/pdf-vor |
| article xml file uploaded | 16 March 2020 16:11 CET | Original file | - |
