| article html file updated | 9 February 2020 01:52 CET | Update | https://www.mdpi.com/2075-4434/6/1/2 |
| article html file updated | 12 September 2019 13:01 CEST | Update | - |
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| article html file updated | 27 March 2018 12:38 CEST | Update | - |
| article pdf uploaded. | 23 January 2018 06:32 CET | Updated version of record | https://www.mdpi.com/2075-4434/6/1/2/pdf |
| article html file updated | 5 January 2018 11:17 CET | Update | - |
| article xml uploaded. | 5 January 2018 11:16 CET | Update | https://www.mdpi.com/2075-4434/6/1/2/xml |
| article pdf uploaded. | 5 January 2018 11:16 CET | Updated version of record | https://www.mdpi.com/2075-4434/6/1/2/pdf-vor |
| article html file updated | 3 January 2018 13:08 CET | Original file | - |
| article pdf uploaded. | 3 January 2018 13:07 CET | Version of Record | https://www.mdpi.com/2075-4434/6/1/2/pdf-vor |
