| article html file updated | 6 February 2020 00:22 CET | Update | https://www.mdpi.com/2077-0472/3/1/53 |
| article html file updated | 20 March 2019 18:09 CET | Update | - |
| article html file updated | 17 June 2015 06:07 CEST | Update | - |
| article html file updated | 19 February 2013 14:20 CET | Update | - |
| article xml uploaded. | 19 February 2013 14:20 CET | Original file | https://www.mdpi.com/2077-0472/3/1/53/xml |
| article html file updated | 8 February 2013 09:50 CET | Original file | - |
| article supplementary file uploaded. | 4 February 2013 10:53 CET | - | https://www.mdpi.com/2077-0472/3/1/53#supplementary |
| article pdf uploaded. | 4 February 2013 10:52 CET | Version of Record | https://www.mdpi.com/2077-0472/3/1/53/pdf |
