| article html file updated | 30 August 2025 00:25 CEST | Update | https://www.mdpi.com/2073-4360/9/2/68 |
| article html file updated | 16 July 2022 04:54 CEST | Update | N/A |
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| article xml uploaded. | 23 February 2017 09:49 CET | Original file | https://www.mdpi.com/2073-4360/9/2/68/xml |
| article pdf uploaded. | 23 February 2017 09:49 CET | Updated version of record | https://www.mdpi.com/2073-4360/9/2/68/pdf |
| article pdf uploaded. | 16 February 2017 10:44 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/68/pdf-vor |
