| article html file updated | 15 August 2026 00:49 CEST | Update | https://www.mdpi.com/2077-1444/9/4/137 |
| article html file updated | 9 February 2020 14:41 CET | Update | N/A |
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| article html file updated | 20 April 2018 14:02 CEST | Original file | N/A |
| article pdf uploaded. | 20 April 2018 14:01 CEST | Version of Record | https://www.mdpi.com/2077-1444/9/4/137/pdf |
| article xml uploaded. | 20 April 2018 14:01 CEST | Update | https://www.mdpi.com/2077-1444/9/4/137/xml |
| article xml file uploaded | 20 April 2018 14:01 CEST | Original file | N/A |
