| article html file updated | 9 February 2020 04:01 CET | Update | https://www.mdpi.com/2305-6320/5/1/13 |
| article html file updated | 30 September 2019 03:37 CEST | Update | - |
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| article html file updated | 23 January 2018 18:28 CET | Original file | - |
| article xml uploaded. | 23 January 2018 18:27 CET | Original file | https://www.mdpi.com/2305-6320/5/1/13/xml |
| article pdf uploaded. | 23 January 2018 18:27 CET | Version of Record | https://www.mdpi.com/2305-6320/5/1/13/pdf |
