| article html file updated | 15 August 2026 12:12 CEST | Update | https://www.mdpi.com/2079-3200/6/4/52 |
| article html file updated | 23 February 2021 07:41 CET | Update | N/A |
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| article html file updated | 6 December 2018 08:07 CET | Original file | N/A |
| article pdf uploaded. | 6 December 2018 08:06 CET | Version of Record | https://www.mdpi.com/2079-3200/6/4/52/pdf |
| article xml uploaded. | 6 December 2018 08:06 CET | Update | https://www.mdpi.com/2079-3200/6/4/52/xml |
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