| article html file updated | 30 August 2025 01:06 CEST | Update | https://www.mdpi.com/1999-4915/9/9/250 |
| article html file updated | 16 July 2022 06:10 CEST | Update | N/A |
| article html file updated | 8 February 2020 15:16 CET | Update | N/A |
| article html file updated | 26 September 2019 22:35 CEST | Update | N/A |
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| article html file updated | 30 September 2017 13:47 CEST | Update | N/A |
| article html file updated | 5 September 2017 10:28 CEST | Original file | N/A |
| article xml uploaded. | 5 September 2017 10:26 CEST | Original file | https://www.mdpi.com/1999-4915/9/9/250/xml |
| article pdf uploaded. | 5 September 2017 10:26 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/9/250/pdf |
| article pdf uploaded. | 4 September 2017 14:02 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/9/250/pdf-vor |
