| article html file updated | 9 February 2020 13:04 CET | Update | https://www.mdpi.com/1424-8247/11/2/32 |
| article html file updated | 2 October 2019 10:18 CEST | Update | - |
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| article xml uploaded. | 10 April 2018 13:34 CEST | Update | https://www.mdpi.com/1424-8247/11/2/32/xml |
| article pdf uploaded. | 10 April 2018 13:34 CEST | Updated version of record | https://www.mdpi.com/1424-8247/11/2/32/pdf |
| article html file updated | 9 April 2018 13:13 CEST | Original file | - |
| article pdf uploaded. | 9 April 2018 13:12 CEST | Version of Record | https://www.mdpi.com/1424-8247/11/2/32/pdf-vor |
