author = {George~E.~Andrews and Arnold~Knopfmacher and Burkhard~Zimmermann},
title = {{On the number of distinct multinomial coefficients}},
language = {english},
journal = {Journal of Number Theory},
volume = {118},
number = {1},
pages = {15--30},
isbn_issn = {ISSN 0022-314X},
year = {2006},
month = {May},
refereed = {yes},
length = {16}