| article html file updated | 8 February 2020 04:54 CET | Update | https://www.mdpi.com/1999-4907/8/5/154 |
| article html file updated | 24 September 2019 14:59 CEST | Update | N/A |
| article html file updated | 3 May 2019 23:48 CEST | Update | N/A |
| article html file updated | 31 May 2017 06:53 CEST | Update | N/A |
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| article html file updated | 3 May 2017 04:48 CEST | Original file | N/A |
| article xml uploaded. | 3 May 2017 04:47 CEST | Original file | https://www.mdpi.com/1999-4907/8/5/154/xml |
| article pdf uploaded. | 3 May 2017 04:47 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/5/154/pdf |