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| article html file updated | 29 September 2019 11:48 CEST | Update | - |
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| article xml uploaded. | 26 December 2017 07:46 CET | Update | https://www.mdpi.com/2075-5309/8/1/2/xml |
| article pdf uploaded. | 26 December 2017 07:46 CET | Updated version of record | https://www.mdpi.com/2075-5309/8/1/2/pdf |
| article html file updated | 26 December 2017 07:44 CET | Original file | - |
| article xml uploaded. | 26 December 2017 07:43 CET | Update | - |
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| article pdf uploaded. | 26 December 2017 07:43 CET | Version of Record | https://www.mdpi.com/2075-5309/8/1/2/pdf-vor |
