| article html file updated | 6 February 2020 23:59 CET | Update | https://www.mdpi.com/2077-1312/3/4/1260 |
| article html file updated | 21 September 2019 05:05 CEST | Update | - |
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| article html file updated | 27 October 2017 11:23 CEST | Original file | - |
| article pdf uploaded. | 23 October 2015 03:59 CEST | Updated version of record | https://www.mdpi.com/2077-1312/3/4/1260/pdf |
| article pdf uploaded. | 20 October 2015 15:44 CEST | Version of Record | https://www.mdpi.com/2077-1312/3/4/1260/pdf-vor |
