| article html file updated | 9 February 2020 00:05 CET | Update | https://www.mdpi.com/2225-1154/5/4/96 |
| article html file updated | 2 May 2019 08:33 CEST | Update | N/A |
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| article pdf uploaded. | 14 December 2017 16:25 CET | Updated version of record | https://www.mdpi.com/2225-1154/5/4/96/pdf |
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