| article html file updated | 9 February 2020 05:34 CET | Update | https://www.mdpi.com/2079-6412/8/2/59 |
| article html file updated | 30 September 2019 12:59 CEST | Update | - |
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| article html file updated | 14 March 2018 08:49 CET | Update | - |
| article html file updated | 7 February 2018 13:31 CET | Original file | - |
| article xml uploaded. | 7 February 2018 13:30 CET | Update | https://www.mdpi.com/2079-6412/8/2/59/xml |
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| article xml uploaded. | 7 February 2018 13:18 CET | Update | - |
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| article pdf uploaded. | 7 February 2018 13:18 CET | Updated version of record | https://www.mdpi.com/2079-6412/8/2/59/pdf |
| article pdf uploaded. | 5 February 2018 11:48 CET | Version of Record | https://www.mdpi.com/2079-6412/8/2/59/pdf-vor |