| article html file updated | 9 February 2020 03:40 CET | Update | https://www.mdpi.com/2297-8739/5/1/7 |
| article html file updated | 2 May 2019 00:59 CEST | Update | - |
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| article xml uploaded. | 22 January 2018 06:50 CET | Update | https://www.mdpi.com/2297-8739/5/1/7/xml |
| article pdf uploaded. | 22 January 2018 06:50 CET | Updated version of record | https://www.mdpi.com/2297-8739/5/1/7/pdf |
| article html file updated | 19 January 2018 18:54 CET | Original file | - |
| article xml uploaded. | 19 January 2018 18:53 CET | Original file | - |
| article pdf uploaded. | 19 January 2018 18:53 CET | Version of Record | https://www.mdpi.com/2297-8739/5/1/7/pdf-vor |
