| article html file updated | 6 February 2020 01:46 CET | Update | https://www.mdpi.com/2076-393X/1/2/139 |
| article html file updated | 19 September 2019 20:04 CEST | Update | - |
| article html file updated | 8 May 2019 05:49 CEST | Update | - |
| article html file updated | 20 March 2019 21:41 CET | Update | - |
| article html file updated | 2 July 2015 06:38 CEST | Update | - |
| article xml file uploaded | 2 July 2015 06:38 CEST | Update | https://www.mdpi.com/2076-393X/1/2/139/xml |
| article html file updated | 17 June 2015 08:48 CEST | Update | - |
| article html file updated | 16 December 2014 04:58 CET | Original file | - |
| article xml file uploaded | 16 December 2014 04:58 CET | Original file | - |
| article pdf uploaded. | 25 April 2013 15:37 CEST | Version of Record | https://www.mdpi.com/2076-393X/1/2/139/pdf |
