| article html file updated | 6 February 2020 18:16 CET | Update | https://www.mdpi.com/2220-9964/4/2/741 |
| article html file updated | 6 May 2019 20:45 CEST | Update | - |
| article html file updated | 26 March 2019 01:52 CET | Update | - |
| article html file updated | 21 August 2015 11:32 CEST | Update | - |
| article html file updated | 30 June 2015 08:04 CEST | Update | - |
| article xml file uploaded | 30 June 2015 08:04 CEST | Update | https://www.mdpi.com/2220-9964/4/2/741/xml |
| article html file updated | 22 May 2015 09:51 CEST | Original file | - |
| article xml file uploaded | 22 May 2015 09:51 CEST | Original file | - |
| article pdf uploaded. | 20 May 2015 14:41 CEST | Updated version of record | https://www.mdpi.com/2220-9964/4/2/741/pdf |
| article pdf uploaded. | 4 May 2015 09:56 CEST | Version of Record | https://www.mdpi.com/2220-9964/4/2/741/pdf-vor |
