| article html file updated | 29 August 2025 20:59 CEST | Update | https://www.mdpi.com/2218-273X/4/1/291 |
| article html file updated | 15 July 2022 22:55 CEST | Update | - |
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| article xml uploaded. | 30 December 2018 05:35 CET | Update | https://www.mdpi.com/2218-273X/4/1/291/xml |
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| article pdf uploaded. | 30 December 2018 05:35 CET | Updated version of record | https://www.mdpi.com/2218-273X/4/1/291/pdf |
| article xml uploaded. | 28 December 2018 10:29 CET | Update | - |
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| article xml file uploaded | 28 April 2014 10:38 CEST | Update | - |
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