| article html file updated | 29 August 2025 22:42 CEST | Update | https://www.mdpi.com/1999-4915/8/2/50 |
| article html file updated | 20 August 2025 22:13 CEST | Update | N/A |
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| article html file updated | 26 March 2019 20:38 CET | Original file | N/A |
| article pdf uploaded. | 19 February 2016 10:34 CET | Updated version of record | https://www.mdpi.com/1999-4915/8/2/50/pdf |
| article xml uploaded. | 19 February 2016 10:34 CET | Original file | https://www.mdpi.com/1999-4915/8/2/50/xml |
| article pdf uploaded. | 12 February 2016 15:37 CET | Version of Record | https://www.mdpi.com/1999-4915/8/2/50/pdf-vor |
