| article html file updated | 9 February 2020 12:38 CET | Update | https://www.mdpi.com/2075-4701/8/4/240 |
| article html file updated | 2 October 2019 07:28 CEST | Update | N/A |
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| article html file updated | 5 April 2018 08:28 CEST | Original file | N/A |
| article xml uploaded. | 5 April 2018 08:26 CEST | Update | https://www.mdpi.com/2075-4701/8/4/240/xml |
| article pdf uploaded. | 5 April 2018 08:26 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/240/pdf |