| article html file updated | 6 February 2020 16:02 CET | Update | https://www.mdpi.com/1999-4907/6/2/492 |
| article html file updated | 7 May 2019 00:50 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:54 CET | Update | N/A |
| article html file updated | 21 August 2015 07:47 CEST | Update | N/A |
| article html file updated | 28 February 2015 03:09 CET | Original file | N/A |
| article xml file uploaded | 28 February 2015 03:09 CET | Original file | https://www.mdpi.com/1999-4907/6/2/492/xml |
| article supplementary file uploaded. | 16 February 2015 14:21 CET | - | https://www.mdpi.com/1999-4907/6/2/492#supplementary |
| article pdf uploaded. | 16 February 2015 14:21 CET | Version of Record | https://www.mdpi.com/1999-4907/6/2/492/pdf |
