| article html file updated | 8 February 2020 11:48 CET | Update | https://www.mdpi.com/1999-4907/8/7/257 |
| article html file updated | 26 September 2019 03:02 CEST | Update | N/A |
| article html file updated | 3 May 2019 10:47 CEST | Update | N/A |
| article html file updated | 27 March 2019 17:18 CET | Update | N/A |
| article html file updated | 1 August 2017 08:45 CEST | Update | N/A |
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| article html file updated | 23 July 2017 07:49 CEST | Update | N/A |
| article html file updated | 23 July 2017 07:48 CEST | Original file | N/A |
| article xml uploaded. | 23 July 2017 07:47 CEST | Original file | https://www.mdpi.com/1999-4907/8/7/257/xml |
| article pdf uploaded. | 23 July 2017 07:47 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/7/257/pdf |
