| article html file updated | 6 February 2020 19:23 CET | Update | https://www.mdpi.com/2076-3921/4/2/394 |
| article html file updated | 6 May 2019 18:24 CEST | Update | - |
| article html file updated | 26 March 2019 04:11 CET | Update | - |
| article html file updated | 21 August 2015 13:10 CEST | Update | - |
| article html file updated | 30 June 2015 03:11 CEST | Original file | - |
| article xml file uploaded | 30 June 2015 03:11 CEST | Original file | https://www.mdpi.com/2076-3921/4/2/394/xml |
| article pdf uploaded. | 5 June 2015 07:43 CEST | Updated version of record | https://www.mdpi.com/2076-3921/4/2/394/pdf |
| article pdf uploaded. | 5 June 2015 07:42 CEST | Updated version of record | https://www.mdpi.com/2076-3921/4/2/394/pdf-vor |
| article pdf uploaded. | 4 June 2015 13:02 CEST | Version of Record | https://www.mdpi.com/2076-3921/4/2/394/pdf-vor |
