| article html file updated | 8 February 2020 09:19 CET | Update | https://www.mdpi.com/2227-9709/4/3/18 |
| article html file updated | 3 May 2019 15:30 CEST | Update | N/A |
| article html file updated | 27 October 2017 10:26 CEST | Update | N/A |
| article html file updated | 28 June 2017 11:07 CEST | Update | N/A |
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| article html file updated | 27 June 2017 11:13 CEST | Original file | N/A |
| article xml uploaded. | 27 June 2017 09:59 CEST | Original file | https://www.mdpi.com/2227-9709/4/3/18/xml |
| article pdf uploaded. | 27 June 2017 09:59 CEST | Version of Record | https://www.mdpi.com/2227-9709/4/3/18/pdf |
