| article html file updated | 11 February 2020 03:34 CET | Update | https://www.mdpi.com/2227-7390/6/12/331 |
| article html file updated | 12 October 2019 01:23 CEST | Update | - |
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| article html file updated | 25 December 2018 05:08 CET | Update | - |
| article html file updated | 17 December 2018 06:27 CET | Original file | - |
| article pdf uploaded. | 17 December 2018 06:25 CET | Version of Record | https://www.mdpi.com/2227-7390/6/12/331/pdf |
| article xml uploaded. | 17 December 2018 06:25 CET | Update | https://www.mdpi.com/2227-7390/6/12/331/xml |
| article xml file uploaded | 17 December 2018 06:25 CET | Original file | - |
