| article html file updated | 8 February 2020 06:29 CET | Update | https://www.mdpi.com/2076-3387/7/2/15 |
| article html file updated | 24 September 2019 23:10 CEST | Update | - |
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| article html file updated | 27 October 2017 09:18 CEST | Update | - |
| article html file updated | 23 May 2017 12:44 CEST | Original file | - |
| article xml uploaded. | 23 May 2017 12:43 CEST | Original file | https://www.mdpi.com/2076-3387/7/2/15/xml |
| article pdf uploaded. | 23 May 2017 12:43 CEST | Version of Record | https://www.mdpi.com/2076-3387/7/2/15/pdf |
