| article html file updated | 9 February 2020 01:33 CET | Update | https://www.mdpi.com/2075-4701/8/1/13 |
| article html file updated | 29 September 2019 13:46 CEST | Update | - |
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| article html file updated | 29 December 2017 16:02 CET | Original file | - |
| article xml uploaded. | 29 December 2017 16:00 CET | Update | https://www.mdpi.com/2075-4701/8/1/13/xml |
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| article pdf uploaded. | 29 December 2017 16:00 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/13/pdf |
