| article html file updated | 6 February 2020 19:28 CET | Update | https://www.mdpi.com/1999-4907/6/6/2066 |
| article html file updated | 6 May 2019 18:15 CEST | Update | N/A |
| article html file updated | 26 March 2019 04:20 CET | Update | N/A |
| article html file updated | 21 August 2015 13:17 CEST | Update | N/A |
| article html file updated | 30 June 2015 08:04 CEST | Original file | N/A |
| article xml file uploaded | 30 June 2015 08:04 CEST | Original file | https://www.mdpi.com/1999-4907/6/6/2066/xml |
| article pdf uploaded. | 24 June 2015 09:09 CEST | Updated version of record | https://www.mdpi.com/1999-4907/6/6/2066/pdf |
| article pdf uploaded. | 8 June 2015 12:03 CEST | Version of Record | https://www.mdpi.com/1999-4907/6/6/2066/pdf-vor |
