R. E. Hartwig
发表
P. Patrício,
R. E. Hartwig,
R. Hartwig,
2009,
Appl. Math. Comput..
P. Patrício,
R. E. Hartwig,
Pedro Patrício,
2010,
Appl. Math. Comput..
R. E. Hartwig,
J. Shoaf,
R. Hartwig,
1977,
Journal of the Australian Mathematical Society.
R. E. Hartwig,
1976
.