| article html file updated | 9 February 2020 05:46 CET | Update | https://www.mdpi.com/2305-6320/5/1/20 |
| article html file updated | 30 September 2019 14:13 CEST | Update | - |
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| article html file updated | 7 February 2018 05:51 CET | Original file | - |
| article xml uploaded. | 7 February 2018 05:50 CET | Original file | https://www.mdpi.com/2305-6320/5/1/20/xml |
| article pdf uploaded. | 7 February 2018 05:50 CET | Version of Record | https://www.mdpi.com/2305-6320/5/1/20/pdf |
