| article html file updated | 6 February 2020 15:56 CET | Update | https://www.mdpi.com/2218-6581/4/1/25 |
| article html file updated | 7 May 2019 01:01 CEST | Update | - |
| article html file updated | 25 March 2019 21:44 CET | Update | - |
| article html file updated | 21 August 2015 07:38 CEST | Update | - |
| article html file updated | 10 March 2015 07:37 CET | Original file | - |
| article xml file uploaded | 10 March 2015 07:37 CET | Original file | https://www.mdpi.com/2218-6581/4/1/25/xml |
| article pdf uploaded. | 17 February 2015 08:13 CET | Updated version of record | https://www.mdpi.com/2218-6581/4/1/25/pdf |
| article pdf uploaded. | 13 February 2015 08:38 CET | Updated version of record | https://www.mdpi.com/2218-6581/4/1/25/pdf-vor |
| article pdf uploaded. | 12 February 2015 14:57 CET | Version of Record | https://www.mdpi.com/2218-6581/4/1/25/pdf-vor |
