| article html file updated | 30 August 2025 00:35 CEST | Update | https://www.mdpi.com/2073-4409/6/1/7 |
| article html file updated | 16 July 2022 05:12 CEST | Update | N/A |
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| article xml uploaded. | 14 March 2017 04:23 CET | Original file | https://www.mdpi.com/2073-4409/6/1/7/xml |
| article pdf uploaded. | 14 March 2017 04:23 CET | Updated version of record | https://www.mdpi.com/2073-4409/6/1/7/pdf |
| article pdf uploaded. | 8 March 2017 13:20 CET | Version of Record | https://www.mdpi.com/2073-4409/6/1/7/pdf-vor |
