| article html file updated | 7 February 2020 03:29 CET | Update | https://www.mdpi.com/2218-273X/6/1/12 |
| article html file updated | 6 May 2019 02:29 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:33 CET | Update | N/A |
| article html file updated | 28 March 2016 11:39 CEST | Original file | N/A |
| article pdf uploaded. | 18 January 2016 13:25 CET | Updated version of record | https://www.mdpi.com/2218-273X/6/1/12/pdf |
| article pdf uploaded. | 15 January 2016 13:13 CET | Version of Record | https://www.mdpi.com/2218-273X/6/1/12/pdf-vor |
| article xml uploaded. | 15 January 2016 13:13 CET | Original file | https://www.mdpi.com/2218-273X/6/1/12/xml |
