| article html file updated | 9 February 2020 09:25 CET | Update | https://www.mdpi.com/2227-9067/5/3/40 |
| article html file updated | 1 October 2019 11:27 CEST | Update | - |
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| article html file updated | 26 March 2018 13:08 CEST | Update | - |
| article html file updated | 11 March 2018 08:03 CET | Original file | - |
| article xml uploaded. | 11 March 2018 08:02 CET | Update | https://www.mdpi.com/2227-9067/5/3/40/xml |
| article pdf uploaded. | 11 March 2018 08:02 CET | Version of Record | https://www.mdpi.com/2227-9067/5/3/40/pdf |
