| article html file updated | 6 February 2020 01:41 CET | Update | https://www.mdpi.com/2076-3425/3/2/615 |
| article html file updated | 8 May 2019 05:57 CEST | Update | N/A |
| article html file updated | 20 March 2019 21:27 CET | Update | N/A |
| article html file updated | 17 June 2015 08:40 CEST | Update | N/A |
| article html file updated | 20 May 2014 08:36 CEST | Original file | N/A |
| article xml file uploaded | 20 May 2014 08:36 CEST | Original file | https://www.mdpi.com/2076-3425/3/2/615/xml |
| article pdf uploaded. | 24 April 2013 09:39 CEST | Updated version of record | https://www.mdpi.com/2076-3425/3/2/615/pdf |
| article pdf uploaded. | 23 April 2013 13:25 CEST | Version of Record | https://www.mdpi.com/2076-3425/3/2/615/pdf-vor |
