R. J. Ruffell
发表
R. J. Ruffell,
1978
.
N. Hanley,
R. J. Ruffell,
1993
.
Kevin J. Gaston,
Nick Hanley,
Paul R. Armsworth,
2009
.
Nick Hanley,
N. Hanley,
Robin J. Ruffell,
1992
.
R. Hart,
R. J. Ruffell,
1998,
National Institute Economic Review.
N. Hanley,
R. J. Ruffell,
1992
.
R. Hart,
R. J. Ruffell,
1993
.