| article html file updated | 9 February 2020 10:40 CET | Update | https://www.mdpi.com/2304-8158/7/4/43 |
| article html file updated | 1 October 2019 20:04 CEST | Update | - |
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| article html file updated | 23 March 2018 11:25 CET | Update | - |
| article xml uploaded. | 23 March 2018 11:24 CET | Update | https://www.mdpi.com/2304-8158/7/4/43/xml |
| article pdf uploaded. | 23 March 2018 11:24 CET | Updated version of record | https://www.mdpi.com/2304-8158/7/4/43/pdf |
| article html file updated | 21 March 2018 15:49 CET | Original file | - |
| article pdf uploaded. | 21 March 2018 15:48 CET | Version of Record | https://www.mdpi.com/2304-8158/7/4/43/pdf-vor |
