| article html file updated | 8 February 2020 09:17 CET | Update | https://www.mdpi.com/2227-9709/4/3/17 |
| article html file updated | 25 September 2019 13:50 CEST | Update | - |
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| article html file updated | 27 October 2017 10:25 CEST | Update | - |
| article html file updated | 26 June 2017 13:51 CEST | Original file | - |
| article xml uploaded. | 26 June 2017 13:50 CEST | Original file | https://www.mdpi.com/2227-9709/4/3/17/xml |
| article pdf uploaded. | 26 June 2017 13:50 CEST | Version of Record | https://www.mdpi.com/2227-9709/4/3/17/pdf |
