| article html file updated | 14 August 2026 19:46 CEST | Update | https://www.mdpi.com/2313-0105/3/4/38 |
| article html file updated | 8 February 2020 23:00 CET | Update | N/A |
| article html file updated | 28 September 2019 23:06 CEST | Update | N/A |
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| article html file updated | 4 December 2017 12:01 CET | Original file | N/A |
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| article pdf uploaded. | 4 December 2017 12:00 CET | Version of Record | https://www.mdpi.com/2313-0105/3/4/38/pdf |
