| article html file updated | 29 August 2025 22:34 CEST | Update | https://www.mdpi.com/1999-4915/8/1/13 |
| article html file updated | 16 July 2022 01:34 CEST | Update | N/A |
| article html file updated | 7 February 2020 03:12 CET | Update | N/A |
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| article html file updated | 26 March 2019 18:00 CET | Original file | N/A |
| article pdf uploaded. | 8 January 2016 14:51 CET | Version of Record | https://www.mdpi.com/1999-4915/8/1/13/pdf |
| article xml uploaded. | 8 January 2016 14:51 CET | Original file | https://www.mdpi.com/1999-4915/8/1/13/xml |
