| article html file updated | 6 February 2020 07:00 CET | Update | https://www.mdpi.com/1999-5903/6/1/76 |
| article html file updated | 7 May 2019 19:11 CEST | Update | - |
| article html file updated | 21 March 2019 11:43 CET | Update | - |
| article html file updated | 19 August 2015 19:03 CEST | Update | - |
| article html file updated | 24 June 2014 12:09 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:08 CEST | Original file | https://www.mdpi.com/1999-5903/6/1/76/xml |
| article pdf uploaded. | 29 January 2014 10:43 CET | Updated version of record | https://www.mdpi.com/1999-5903/6/1/76/pdf |
| article pdf uploaded. | 29 January 2014 10:42 CET | Updated version of record | https://www.mdpi.com/1999-5903/6/1/76/pdf-vor |
| article pdf uploaded. | 27 January 2014 18:26 CET | Version of Record | https://www.mdpi.com/1999-5903/6/1/76/pdf-vor |
