P. Ratcliffe
发表
P. Ratcliffe,
S. Harris,
1996
.
C. Domb,
P. Ratcliffe,
1981
.
P. Ratcliffe,
1982,
March 16.
P. Ratcliffe,
N. J. Walters,
N. Jones,
1981
.
R. Sands,
H. Mansfield,
P. Ratcliffe,
2005
.
R. A. Collins,
P. Ratcliffe,
1988,
August 16.
R. A. Collins,
P. Ratcliffe,
1978,
August 16.
J. Badyal,
P. Ratcliffe,
C. P. Barker,
1994
.
J. D. Thomas,
P. Ratcliffe,
1973
.