| article html file updated | 7 February 2020 04:51 CET | Update | https://www.mdpi.com/2076-3387/6/1/3 |
| article html file updated | 5 May 2019 23:39 CEST | Update | - |
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| article xml uploaded. | 2 December 2016 08:40 CET | Update | https://www.mdpi.com/2076-3387/6/1/3/xml |
| article pdf uploaded. | 2 December 2016 08:40 CET | Updated version of record | https://www.mdpi.com/2076-3387/6/1/3/pdf |
| article pdf uploaded. | 23 February 2016 11:09 CET | Version of Record | - |
| article xml uploaded. | 23 February 2016 11:09 CET | Original file | - |