author = {Dominici Diego},
title = {{A few observations on the Collatz problem}},
language = {english},
journal = {Int. J. Appl. Math. Stat.},
volume = {14},
number = {J09},
pages = {97--107},
isbn_issn = { ISSN 0973-1377},
year = {2009},
refereed = {yes},
length = {11}