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1997 Article ​

1992 Article ​

2007 Article ​

2015 Article ​

1994-06-14 Thesis ​

2006 Article ​

1992 Article ​

2014 Conf. Object ​

2004 Article ​

2022-12-27 Article ​

2014 Article ​

2007 Article ​

2007 Article ​

2003 Article ​

1999 Article ​

1996-10-16 Thesis ​

2001 Article ​

1999 Article ​

2011 Article ​

1999-06-10 Thesis ​

2005-12-02 Thesis ​

1998-12-22 Thesis ​

1998 Article ​

2002-02-22 Thesis ​