| article html file updated | 8 February 2020 07:51 CET | Update | https://www.mdpi.com/2306-7381/4/2/30 |
| article html file updated | 25 September 2019 06:12 CEST | Update | - |
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| article xml uploaded. | 24 August 2017 13:15 CEST | Update | https://www.mdpi.com/2306-7381/4/2/30/xml |
| article pdf uploaded. | 24 August 2017 13:15 CEST | Updated version of record | https://www.mdpi.com/2306-7381/4/2/30/pdf |
| article html file updated | 12 June 2017 05:13 CEST | Original file | - |
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| article pdf uploaded. | 9 June 2017 10:33 CEST | Version of Record | https://www.mdpi.com/2306-7381/4/2/30/pdf-vor |
