| article html file updated | 9 February 2020 10:03 CET | Update | https://www.mdpi.com/2304-8158/7/3/39 |
| article html file updated | 1 October 2019 16:28 CEST | Update | - |
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| article xml uploaded. | 19 March 2018 11:19 CET | Update | https://www.mdpi.com/2304-8158/7/3/39/xml |
| article pdf uploaded. | 19 March 2018 11:19 CET | Updated version of record | https://www.mdpi.com/2304-8158/7/3/39/pdf |
| article html file updated | 16 March 2018 05:19 CET | Original file | - |
| article pdf uploaded. | 16 March 2018 05:18 CET | Version of Record | https://www.mdpi.com/2304-8158/7/3/39/pdf-vor |
