| article html file updated | 9 February 2020 01:38 CET | Update | https://www.mdpi.com/2075-4701/8/1/22 |
| article html file updated | 29 September 2019 14:13 CEST | Update | - |
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| article html file updated | 9 February 2018 10:56 CET | Update | - |
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| article html file updated | 31 December 2017 11:57 CET | Original file | - |
| article xml uploaded. | 31 December 2017 11:56 CET | Update | https://www.mdpi.com/2075-4701/8/1/22/xml |
| article xml uploaded. | 31 December 2017 11:56 CET | Original file | - |
| article pdf uploaded. | 31 December 2017 11:56 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/22/pdf |
