| article html file updated | 6 February 2020 16:29 CET | Update | https://www.mdpi.com/2078-2489/6/1/69 |
| article html file updated | 7 May 2019 00:00 CEST | Update | - |
| article html file updated | 25 March 2019 22:45 CET | Update | - |
| article html file updated | 21 August 2015 08:34 CEST | Update | - |
| article html file updated | 26 March 2015 04:58 CET | Original file | - |
| article xml file uploaded | 26 March 2015 04:58 CET | Original file | https://www.mdpi.com/2078-2489/6/1/69/xml |
| article pdf uploaded. | 23 March 2015 08:55 CET | Updated version of record | https://www.mdpi.com/2078-2489/6/1/69/pdf |
| article pdf uploaded. | 10 March 2015 15:10 CET | Version of Record | https://www.mdpi.com/2078-2489/6/1/69/pdf-vor |
