| article html file updated | 6 February 2020 16:57 CET | Update | https://www.mdpi.com/2076-393X/3/2/221 |
| article html file updated | 6 May 2019 23:11 CEST | Update | - |
| article html file updated | 25 March 2019 23:30 CET | Update | - |
| article html file updated | 8 September 2015 06:05 CEST | Update | - |
| article xml file uploaded | 8 September 2015 06:05 CEST | Update | https://www.mdpi.com/2076-393X/3/2/221/xml |
| article html file updated | 21 August 2015 09:16 CEST | Update | - |
| article html file updated | 2 July 2015 06:38 CEST | Original file | - |
| article xml file uploaded | 2 July 2015 06:38 CEST | Original file | - |
| article pdf uploaded. | 24 March 2015 16:37 CET | Version of Record | https://www.mdpi.com/2076-393X/3/2/221/pdf |
