| article html file updated | 8 February 2020 06:06 CET | Update | https://www.mdpi.com/2078-2489/8/2/57 |
| article html file updated | 24 September 2019 21:09 CEST | Update | - |
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| article html file updated | 28 June 2017 13:49 CEST | Update | - |
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| article xml uploaded. | 18 May 2017 11:09 CEST | Update | https://www.mdpi.com/2078-2489/8/2/57/xml |
| article pdf uploaded. | 18 May 2017 11:09 CEST | Updated version of record | https://www.mdpi.com/2078-2489/8/2/57/pdf |
| article html file updated | 17 May 2017 16:19 CEST | Original file | - |
| article pdf uploaded. | 17 May 2017 16:18 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/2/57/pdf-vor |
