| article html file updated | 6 February 2020 20:01 CET | Update | https://www.mdpi.com/2076-3921/4/3/447 |
| article html file updated | 6 May 2019 17:06 CEST | Update | - |
| article html file updated | 26 March 2019 05:20 CET | Update | - |
| article html file updated | 14 October 2015 08:44 CEST | Update | - |
| article xml file uploaded | 14 October 2015 08:44 CEST | Original file | https://www.mdpi.com/2076-3921/4/3/447/xml |
| article html file updated | 21 August 2015 14:03 CEST | Original file | - |
| article pdf uploaded. | 25 June 2015 09:57 CEST | Updated version of record | https://www.mdpi.com/2076-3921/4/3/447/pdf |
| article pdf uploaded. | 24 June 2015 16:53 CEST | Version of Record | https://www.mdpi.com/2076-3921/4/3/447/pdf-vor |
