| article html file updated | 7 February 2020 16:40 CET | Update | https://www.mdpi.com/2076-3387/6/4/14 |
| article html file updated | 22 September 2019 03:27 CEST | Update | - |
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| article html file updated | 27 October 2017 09:18 CEST | Update | - |
| article html file updated | 20 October 2016 04:04 CEST | Original file | - |
| article xml uploaded. | 20 October 2016 04:03 CEST | Original file | https://www.mdpi.com/2076-3387/6/4/14/xml |
| article pdf uploaded. | 20 October 2016 04:03 CEST | Version of Record | https://www.mdpi.com/2076-3387/6/4/14/pdf |
