@article{02236285,
title = {The case of equality in Landau's problem.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2005},
year = {2005},
pages = {1781-1793},
doi = {10.1155/IJMMS.2005.1781},
zbl = {1077.26008},
language = {en},
url = {http://dml.mathdoc.fr/item/02236285}
}
Hagerty, G.W.; Nag, P. The case of equality in Landau's problem.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 1781-1793. doi : 10.1155/IJMMS.2005.1781. http://gdmltest.u-ga.fr/item/02236285/