| article html file updated | 7 February 2020 05:22 CET | Update | https://www.mdpi.com/2075-4418/6/1/13 |
| article html file updated | 5 May 2019 22:36 CEST | Update | - |
| article html file updated | 26 March 2019 22:24 CET | Update | - |
| article html file updated | 28 March 2016 11:28 CEST | Original file | - |
| article xml uploaded. | 7 March 2016 07:25 CET | Update | https://www.mdpi.com/2075-4418/6/1/13/xml |
| article pdf uploaded. | 5 March 2016 02:41 CET | Updated version of record | https://www.mdpi.com/2075-4418/6/1/13/pdf |
| article pdf uploaded. | 4 March 2016 08:32 CET | Version of Record | https://www.mdpi.com/2075-4418/6/1/13/pdf-vor |
