| article html file updated | 7 February 2020 10:58 CET | Update | https://www.mdpi.com/2311-5521/1/3/20 |
| article html file updated | 5 May 2019 11:27 CEST | Update | - |
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| article html file updated | 29 June 2016 14:28 CEST | Original file | - |
| article xml uploaded. | 29 June 2016 14:26 CEST | Original file | https://www.mdpi.com/2311-5521/1/3/20/xml |
| article pdf uploaded. | 29 June 2016 14:26 CEST | Version of Record | https://www.mdpi.com/2311-5521/1/3/20/pdf |
