| article html file updated | 6 February 2020 04:33 CET | Update | https://www.mdpi.com/2218-1989/3/4/853 |
| article html file updated | 8 May 2019 00:04 CEST | Update | - |
| article html file updated | 21 March 2019 05:00 CET | Update | - |
| article html file updated | 17 June 2015 13:27 CEST | Update | - |
| article html file updated | 18 March 2014 09:53 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:53 CET | Original file | https://www.mdpi.com/2218-1989/3/4/853/xml |
| article supplementary file uploaded. | 27 February 2014 09:21 CET | - | https://www.mdpi.com/2218-1989/3/4/853#supplementary |
| article pdf uploaded. | 26 September 2013 17:47 CEST | Updated version of record | https://www.mdpi.com/2218-1989/3/4/853/pdf |
| article pdf uploaded. | 25 September 2013 18:07 CEST | Version of Record | https://www.mdpi.com/2218-1989/3/4/853/pdf-vor |
