| article html file updated | 7 February 2020 21:23 CET | Update | https://www.mdpi.com/2075-4450/8/1/12 |
| article html file updated | 22 September 2019 20:53 CEST | Update | - |
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| article html file updated | 30 March 2017 11:01 CEST | Update | - |
| article html file updated | 13 January 2017 08:19 CET | Original file | - |
| article xml uploaded. | 13 January 2017 08:18 CET | Original file | https://www.mdpi.com/2075-4450/8/1/12/xml |
| article pdf uploaded. | 13 January 2017 08:18 CET | Version of Record | https://www.mdpi.com/2075-4450/8/1/12/pdf |
