| article html file updated | 6 February 2020 18:57 CET | Update | https://www.mdpi.com/2218-2004/3/2/162 |
| article html file updated | 6 May 2019 19:21 CEST | Update | N/A |
| article html file updated | 26 March 2019 03:19 CET | Update | N/A |
| article html file updated | 21 August 2015 12:34 CEST | Original file | N/A |
| article pdf uploaded. | 11 June 2015 10:43 CEST | Updated version of record | https://www.mdpi.com/2218-2004/3/2/162/pdf |
| article pdf uploaded. | 10 June 2015 15:06 CEST | Updated version of record | https://www.mdpi.com/2218-2004/3/2/162/pdf-vor |
| article pdf uploaded. | 26 May 2015 09:57 CEST | Updated version of record | https://www.mdpi.com/2218-2004/3/2/162/pdf-vor |
| article pdf uploaded. | 25 May 2015 10:43 CEST | Version of Record | https://www.mdpi.com/2218-2004/3/2/162/pdf-vor |
