| article html file updated | 8 February 2020 05:29 CET | Update | https://www.mdpi.com/2075-5309/7/2/39 |
| article html file updated | 24 September 2019 17:56 CEST | Update | - |
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| article html file updated | 26 October 2017 04:58 CEST | Update | - |
| article xml uploaded. | 26 October 2017 04:57 CEST | Update | https://www.mdpi.com/2075-5309/7/2/39/xml |
| article xml uploaded. | 26 October 2017 04:57 CEST | Update | - |
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| article html file updated | 24 October 2017 08:56 CEST | Update | - |
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| article pdf uploaded. | 24 October 2017 08:55 CEST | Updated version of record | https://www.mdpi.com/2075-5309/7/2/39/pdf |
| article html file updated | 28 June 2017 12:46 CEST | Update | - |
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| article html file updated | 10 May 2017 10:34 CEST | Original file | - |
| article pdf uploaded. | 10 May 2017 10:32 CEST | Version of Record | https://www.mdpi.com/2075-5309/7/2/39/pdf-vor |
