| article html file updated | 9 February 2020 13:12 CET | Update | https://www.mdpi.com/2306-5729/3/2/12 |
| article html file updated | 2 October 2019 11:05 CEST | Update | - |
| article html file updated | 1 May 2019 04:42 CEST | Update | - |
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| article html file updated | 26 June 2018 12:46 CEST | Update | - |
| article html file updated | 10 April 2018 14:54 CEST | Original file | - |
| article xml uploaded. | 10 April 2018 14:52 CEST | Original file | https://www.mdpi.com/2306-5729/3/2/12/xml |
| article pdf uploaded. | 10 April 2018 14:52 CEST | Version of Record | https://www.mdpi.com/2306-5729/3/2/12/pdf |
