| article html file updated | 11 February 2020 02:30 CET | Update | https://www.mdpi.com/2227-7390/6/12/318 |
| article html file updated | 11 October 2019 18:58 CEST | Update | - |
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| article html file updated | 25 December 2018 05:05 CET | Update | - |
| article html file updated | 11 December 2018 10:08 CET | Original file | - |
| article pdf uploaded. | 11 December 2018 10:06 CET | Version of Record | https://www.mdpi.com/2227-7390/6/12/318/pdf |
| article xml uploaded. | 11 December 2018 10:06 CET | Update | https://www.mdpi.com/2227-7390/6/12/318/xml |
| article xml file uploaded | 11 December 2018 10:06 CET | Original file | - |
