| article html file updated | 9 February 2020 17:30 CET | Update | https://www.mdpi.com/2227-9059/6/2/55 |
| article html file updated | 3 October 2019 13:37 CEST | Update | - |
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| article xml uploaded. | 16 May 2018 13:10 CEST | Update | https://www.mdpi.com/2227-9059/6/2/55/xml |
| article pdf uploaded. | 16 May 2018 13:10 CEST | Updated version of record | https://www.mdpi.com/2227-9059/6/2/55/pdf |
| article html file updated | 15 May 2018 08:52 CEST | Update | - |
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| article html file updated | 15 May 2018 08:50 CEST | Original file | - |
| article pdf uploaded. | 15 May 2018 08:49 CEST | Updated version of record | https://www.mdpi.com/2227-9059/6/2/55/pdf-vor |
| article pdf uploaded. | 14 May 2018 17:34 CEST | Version of Record | https://www.mdpi.com/2227-9059/6/2/55/pdf-vor |
