1 1988-11-08.35 Di Martino et al. (1990) 2 1994-02-06.07 Lagerkvist et al. (1995) 3 1994-02-10.06 Lagerkvist et al. (1995) 4 1994-02-18.11 Lagerkvist et al. (1995) 5 1994-02-19.19 Lagerkvist et al. (1995) 6 1994-03-06.02 Lagerkvist et al. (1995) 7 2007-03-26.85 8 2009-08-14.99 9 2009-09-22.84 10 2010-12-10.09 11 2010-12-11.05 12 2011-01-29.00 13 2011-02-07.01 14 2011-02-09.94 15 2011-03-05.88 16 2011-04-07.85 17 1998-02-24--2012-04-15 Lowell