| article html file updated | 7 February 2020 17:38 CET | Update | https://www.mdpi.com/2309-608X/2/4/28 |
| article html file updated | 22 September 2019 04:56 CEST | Update | - |
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| article html file updated | 11 December 2018 09:33 CET | Update | - |
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| article html file updated | 28 November 2016 10:15 CET | Update | - |
| article xml uploaded. | 28 November 2016 10:14 CET | Update | https://www.mdpi.com/2309-608X/2/4/28/xml |
| article xml uploaded. | 28 November 2016 10:14 CET | Update | - |
| article pdf uploaded. | 28 November 2016 10:14 CET | Updated version of record | https://www.mdpi.com/2309-608X/2/4/28/pdf |
| article html file updated | 7 November 2016 12:21 CET | Original file | - |
| article xml uploaded. | 7 November 2016 12:20 CET | Update | - |
| article xml uploaded. | 7 November 2016 12:20 CET | Original file | - |
| article pdf uploaded. | 7 November 2016 12:20 CET | Version of Record | https://www.mdpi.com/2309-608X/2/4/28/pdf-vor |
