| article html file updated | 6 February 2020 10:23 CET | Update | https://www.mdpi.com/2076-3271/2/3/127 |
| article html file updated | 7 May 2019 12:15 CEST | Update | N/A |
| article html file updated | 21 March 2019 20:00 CET | Original file | N/A |
| article pdf uploaded. | 2 July 2014 14:32 CEST | Updated version of record | https://www.mdpi.com/2076-3271/2/3/127/pdf |
| article pdf uploaded. | 1 July 2014 15:28 CEST | Updated version of record | https://www.mdpi.com/2076-3271/2/3/127/pdf-vor |
| article pdf uploaded. | 1 July 2014 15:25 CEST | Version of Record | https://www.mdpi.com/2076-3271/2/3/127/pdf-vor |
