| article html file updated | 9 February 2020 05:54 CET | Update | https://www.mdpi.com/2075-163X/8/2/54 |
| article html file updated | 30 September 2019 15:02 CEST | Update | - |
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| article html file updated | 14 March 2018 15:04 CET | Update | - |
| article html file updated | 8 February 2018 06:55 CET | Original file | - |
| article xml uploaded. | 8 February 2018 06:54 CET | Original file | https://www.mdpi.com/2075-163X/8/2/54/xml |
| article pdf uploaded. | 8 February 2018 06:54 CET | Version of Record | https://www.mdpi.com/2075-163X/8/2/54/pdf |
