| article html file updated | 14 August 2026 19:48 CEST | Update | https://www.mdpi.com/2076-0760/6/4/147 |
| article html file updated | 8 February 2020 23:05 CET | Update | N/A |
| article html file updated | 2 May 2019 10:45 CEST | Update | N/A |
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| article html file updated | 4 December 2017 14:40 CET | Original file | N/A |
| article xml uploaded. | 4 December 2017 14:38 CET | Original file | https://www.mdpi.com/2076-0760/6/4/147/xml |
| article pdf uploaded. | 4 December 2017 14:38 CET | Version of Record | https://www.mdpi.com/2076-0760/6/4/147/pdf |
