| article html file updated | 9 February 2020 05:37 CET | Update | https://www.mdpi.com/2297-8739/5/1/12 |
| article html file updated | 30 September 2019 13:18 CEST | Update | - |
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| article html file updated | 27 March 2018 15:13 CEST | Update | - |
| article html file updated | 6 February 2018 10:34 CET | Original file | - |
| article xml uploaded. | 6 February 2018 10:33 CET | Original file | https://www.mdpi.com/2297-8739/5/1/12/xml |
| article pdf uploaded. | 6 February 2018 10:33 CET | Version of Record | https://www.mdpi.com/2297-8739/5/1/12/pdf |
