Ralph Howard
发表
George F. McNulty,
Virginia Johnson,
Ralph Howard,
2018,
Am. Math. Mon..
Ralph Howard,
R. Howard,
Ralph Howard,
1987
.
László A. Székely,
Gyula Károlyi,
Ralph Howard,
2001,
Electron. J. Comb..
Ralph Howard,
R. Howard,
1998
.
Aaron Abrams,
Jason H. Cantarella,
Mohammad Ghomi,
2001
.
Ralph Howard,
2003
.
Ralph Howard,
R. Howard,
Paul Sisson,
1996
.
James W. Roberts,
Ralph Howard,
R. Howard,
2000
.
Ralph Howard,
Andrejs Treibergs,
R. Howard,
1995
.
László A. Székely,
Gyula Károlyi,
Ralph Howard,
2001
.
Ralph Howard,
R. Howard,
1993
.
Ralph Howard,
R. Howard,
1980
.