| article html file updated | 8 February 2020 23:49 CET | Update | https://www.mdpi.com/2227-9040/5/4/35 |
| article html file updated | 29 September 2019 03:38 CEST | Update | - |
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| article html file updated | 2 January 2018 13:38 CET | Update | - |
| article html file updated | 12 December 2017 09:31 CET | Original file | - |
| article xml uploaded. | 12 December 2017 09:29 CET | Original file | https://www.mdpi.com/2227-9040/5/4/35/xml |
| article pdf uploaded. | 12 December 2017 09:29 CET | Version of Record | https://www.mdpi.com/2227-9040/5/4/35/pdf |
