USLB:10.3109/0142159X.2011.551560
USLB:10.3109/0142159X.2013.787140
USLB:10.3109/0142159X.2014.917156
USLB:10.3109/02703181.2012.751474
USLB:10.3109/09593985.2010.487926
USLB:10.3109/09638288.2013.777804
USLB:10.3109/11038128.2014.894571
USLB:10.3109/13561820.2010.486874
USLB:10.3109/13561820.2014.967754