| article html file updated | 6 February 2020 20:56 CET | Update | https://www.mdpi.com/2076-0752/4/3/93 |
| article html file updated | 6 May 2019 15:13 CEST | Update | N/A |
| article html file updated | 26 March 2019 07:09 CET | Update | N/A |
| article html file updated | 14 October 2015 08:44 CEST | Original file | N/A |
| article xml file uploaded | 14 October 2015 08:44 CEST | Original file | https://www.mdpi.com/2076-0752/4/3/93/xml |
| article pdf uploaded. | 27 July 2015 11:06 CEST | Updated version of record | https://www.mdpi.com/2076-0752/4/3/93/pdf |
| article pdf uploaded. | 22 July 2015 12:51 CEST | Version of Record | https://www.mdpi.com/2076-0752/4/3/93/pdf-vor |
