| article html file updated | 15 August 2026 09:32 CEST | Update | https://www.mdpi.com/2218-6581/7/4/66 |
| article html file updated | 10 February 2020 17:34 CET | Update | N/A |
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| article pdf uploaded. | 24 October 2018 09:34 CEST | Updated version of record | https://www.mdpi.com/2218-6581/7/4/66/pdf |
| article xml uploaded. | 24 October 2018 09:34 CEST | Update | https://www.mdpi.com/2218-6581/7/4/66/xml |
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| article pdf uploaded. | 23 October 2018 16:47 CEST | Updated version of record | N/A |
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