| article html file updated | 6 February 2020 04:58 CET | Update | https://www.mdpi.com/2076-0752/2/4/182 |
| article html file updated | 7 May 2019 23:11 CEST | Update | N/A |
| article html file updated | 21 March 2019 06:08 CET | Update | N/A |
| article html file updated | 17 June 2015 13:59 CEST | Update | N/A |
| article pdf uploaded. | 23 October 2013 11:05 CEST | Updated version of record | https://www.mdpi.com/2076-0752/2/4/182/pdf |
| article html file updated | 17 October 2013 16:17 CEST | Original file | N/A |
| article xml uploaded. | 17 October 2013 16:17 CEST | Original file | https://www.mdpi.com/2076-0752/2/4/182/xml |
| article pdf uploaded. | 17 October 2013 16:04 CEST | Version of Record | https://www.mdpi.com/2076-0752/2/4/182/pdf-vor |
