| article html file updated | 6 February 2020 02:41 CET | Update | https://www.mdpi.com/2075-1680/2/2/271 |
| article html file updated | 8 May 2019 03:56 CEST | Update | N/A |
| article html file updated | 20 March 2019 23:56 CET | Update | N/A |
| article html file updated | 28 July 2017 05:32 CEST | Original file | N/A |
| article xml uploaded. | 28 July 2017 05:30 CEST | Original file | https://www.mdpi.com/2075-1680/2/2/271/xml |
| article supplementary file uploaded. | 18 June 2013 13:31 CEST | - | https://www.mdpi.com/2075-1680/2/2/271#supplementary |
| article pdf uploaded. | 18 June 2013 13:31 CEST | Version of Record | https://www.mdpi.com/2075-1680/2/2/271/pdf |
