| article html file updated | 11 February 2020 17:12 CET | Update | https://www.mdpi.com/2227-9067/6/2/29 |
| article html file updated | 15 October 2019 06:55 CEST | Update | - |
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| article html file updated | 19 February 2019 16:47 CET | Original file | - |
| article pdf uploaded. | 19 February 2019 16:44 CET | Version of Record | https://www.mdpi.com/2227-9067/6/2/29/pdf |
| article xml uploaded. | 19 February 2019 16:44 CET | Update | https://www.mdpi.com/2227-9067/6/2/29/xml |
| article xml file uploaded | 19 February 2019 16:44 CET | Original file | - |
