| article html file updated | 7 February 2020 09:32 CET | Update | https://www.mdpi.com/1999-4907/7/6/117 |
| article html file updated | 5 May 2019 14:09 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:14 CET | Update | N/A |
| article html file updated | 29 June 2016 11:22 CEST | Update | N/A |
| article html file updated | 2 June 2016 05:33 CEST | Update | N/A |
| article xml uploaded. | 2 June 2016 05:32 CEST | Update | https://www.mdpi.com/1999-4907/7/6/117/xml |
| article pdf uploaded. | 2 June 2016 05:32 CEST | Updated version of record | https://www.mdpi.com/1999-4907/7/6/117/pdf |
| article html file updated | 31 May 2016 14:44 CEST | Original file | N/A |
| article pdf uploaded. | 31 May 2016 14:43 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/6/117/pdf-vor |
