| article html file updated | 7 February 2020 00:05 CET | Update | https://www.mdpi.com/2077-1312/3/4/1272 |
| article html file updated | 6 May 2019 08:42 CEST | Update | N/A |
| article html file updated | 26 March 2019 13:08 CET | Update | N/A |
| article html file updated | 10 November 2017 07:49 CET | Update | N/A |
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| article html file updated | 30 October 2017 08:21 CET | Update | N/A |
| article html file updated | 27 October 2017 11:24 CEST | Original file | N/A |
| article pdf uploaded. | 22 October 2015 13:10 CEST | Version of Record | https://www.mdpi.com/2077-1312/3/4/1272/pdf |
