Letters in Mathematical Physics
Letters in Mathematical Physics > 1997 > 39 > 2 > 107-125
Letters in Mathematical Physics > 1997 > 40 > 3 > 257-267
Letters in Mathematical Physics > 1998 > 43 > 2 > 137-154
Letters in Mathematical Physics > 1998 > 43 > 4 > 347-357
Letters in Mathematical Physics > 1998 > 44 > 4 > 331-338
Letters in Mathematical Physics > 1998 > 45 > 1 > 49-61
Letters in Mathematical Physics > 1998 > 45 > 3 > 217-228
Letters in Mathematical Physics > 1998 > 46 > 2 > 171-180
Letters in Mathematical Physics > 1998 > 46 > 4 > 339-345
Letters in Mathematical Physics > 1999 > 48 > 1 > 35-72
Letters in Mathematical Physics > 1999 > 48 > 2 > 123-133
Letters in Mathematical Physics > 1999 > 48 > 4 > 307-322
Letters in Mathematical Physics > 1999 > 48 > 4 > 291-306
Letters in Mathematical Physics > 1999 > 50 > 2 > 145-155
Letters in Mathematical Physics > 2000 > 51 > 3 > 161-177
Letters in Mathematical Physics > 2000 > 52 > 4 > 291-300
Letters in Mathematical Physics > 2000 > 52 > 4 > 301-310
Letters in Mathematical Physics > 2000 > 53 > 1 > 75-86
Letters in Mathematical Physics > 2000 > 53 > 4 > 349-365
Letters in Mathematical Physics > 2000 > 54 > 2 > 123-135