| article html file updated | 8 February 2020 06:02 CET | Update | https://www.mdpi.com/2225-1146/5/2/20 |
| article html file updated | 24 September 2019 20:47 CEST | Update | - |
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| article xml uploaded. | 17 May 2017 08:09 CEST | Original file | https://www.mdpi.com/2225-1146/5/2/20/xml |
| article pdf uploaded. | 17 May 2017 08:09 CEST | Version of Record | https://www.mdpi.com/2225-1146/5/2/20/pdf |
