Search results
Physics Letters A > 2002 > 296 > 6 > 307-311
Physics Letters A > 2002 > 296 > 6 > 312-316
Physics Letters A > 2001 > 285 > 1-2 > 27-33
Physics Letters A > 2002 > 296 > 6 > 307-311
Physics Letters A > 2002 > 296 > 6 > 312-316
Physics Letters A > 2001 > 285 > 1-2 > 27-33