| article html file updated | 9 February 2020 14:58 CET | Update | https://www.mdpi.com/2227-7390/6/4/64 |
| article html file updated | 2 October 2019 21:36 CEST | Update | - |
| article html file updated | 1 May 2019 01:15 CEST | Update | - |
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| article html file updated | 1 May 2018 05:23 CEST | Update | - |
| article html file updated | 23 April 2018 15:34 CEST | Original file | - |
| article pdf uploaded. | 23 April 2018 15:33 CEST | Version of Record | https://www.mdpi.com/2227-7390/6/4/64/pdf |
| article xml uploaded. | 23 April 2018 15:33 CEST | Update | https://www.mdpi.com/2227-7390/6/4/64/xml |
| article xml file uploaded | 23 April 2018 15:33 CEST | Original file | - |
