| article html file updated | 6 February 2020 23:52 CET | Update | https://www.mdpi.com/2076-3387/5/4/177 |
| article html file updated | 21 September 2019 04:56 CEST | Update | N/A |
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| article html file updated | 5 November 2015 08:20 CET | Original file | N/A |
| article xml file uploaded | 5 November 2015 08:20 CET | Original file | https://www.mdpi.com/2076-3387/5/4/177/xml |
| article pdf uploaded. | 16 October 2015 15:17 CEST | Version of Record | https://www.mdpi.com/2076-3387/5/4/177/pdf |
