| article html file updated | 6 February 2020 01:34 CET | Update | https://www.mdpi.com/2072-6643/5/4/1253 |
| article html file updated | 8 May 2019 06:10 CEST | Update | N/A |
| article html file updated | 20 March 2019 21:09 CET | Update | N/A |
| article html file updated | 17 June 2015 08:32 CEST | Update | N/A |
| article html file updated | 30 April 2013 09:34 CEST | Original file | N/A |
| article xml uploaded. | 30 April 2013 09:34 CEST | Original file | https://www.mdpi.com/2072-6643/5/4/1253/xml |
| article pdf uploaded. | 19 April 2013 16:31 CEST | Updated version of record | https://www.mdpi.com/2072-6643/5/4/1253/pdf |
| article pdf uploaded. | 17 April 2013 13:29 CEST | Version of Record | https://www.mdpi.com/2072-6643/5/4/1253/pdf-vor |
