| article html file updated | 6 February 2020 09:21 CET | Update | https://www.mdpi.com/2220-9964/3/2/732 |
| article html file updated | 7 May 2019 14:21 CEST | Update | N/A |
| article html file updated | 21 March 2019 17:17 CET | Update | N/A |
| article html file updated | 20 August 2015 07:34 CEST | Update | N/A |
| article html file updated | 27 June 2014 05:59 CEST | Original file | N/A |
| article xml file uploaded | 27 June 2014 05:59 CEST | Original file | https://www.mdpi.com/2220-9964/3/2/732/xml |
| article pdf uploaded. | 28 May 2014 10:52 CEST | Updated version of record | https://www.mdpi.com/2220-9964/3/2/732/pdf |
| article pdf uploaded. | 26 May 2014 08:46 CEST | Updated version of record | https://www.mdpi.com/2220-9964/3/2/732/pdf-vor |
| article pdf uploaded. | 21 May 2014 09:20 CEST | Updated version of record | https://www.mdpi.com/2220-9964/3/2/732/pdf-vor |
| article pdf uploaded. | 20 May 2014 13:32 CEST | Version of Record | https://www.mdpi.com/2220-9964/3/2/732/pdf-vor |
