| article html file updated | 6 February 2020 08:47 CET | Update | https://www.mdpi.com/2218-1989/4/2/218 |
| article html file updated | 7 May 2019 15:31 CEST | Update | - |
| article html file updated | 21 March 2019 15:57 CET | Update | - |
| article html file updated | 20 August 2015 04:14 CEST | Update | - |
| article html file updated | 18 July 2014 03:58 CEST | Update | - |
| article xml file uploaded | 18 July 2014 03:58 CEST | Update | https://www.mdpi.com/2218-1989/4/2/218/xml |
| article html file updated | 24 June 2014 12:21 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:21 CEST | Original file | - |
| article pdf uploaded. | 24 April 2014 13:26 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/218/pdf |
| article pdf uploaded. | 23 April 2014 08:40 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/218/pdf-vor |
| article supplementary file uploaded. | 22 April 2014 14:36 CEST | - | https://www.mdpi.com/2218-1989/4/2/218#supplementary |
| article pdf uploaded. | 22 April 2014 14:36 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/2/218/pdf-vor |
