| article html file updated | 7 February 2020 15:09 CET | Update | https://www.mdpi.com/2227-9059/4/3/23 |
| article html file updated | 22 September 2019 01:09 CEST | Update | - |
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| article xml uploaded. | 19 September 2016 11:09 CEST | Original file | https://www.mdpi.com/2227-9059/4/3/23/xml |
| article pdf uploaded. | 19 September 2016 11:09 CEST | Version of Record | https://www.mdpi.com/2227-9059/4/3/23/pdf |
