@inbook{acf9b80ac63e4e5890ab2936ad53d171,
title = "Counting methods",
author = "Michaels, \{John G.\} and Jay Yellen and Packel, \{Edward W.\} and Rieper, \{Robert G.\} and Andrews, \{George E.\} and Sills, \{Andrew V.\} and Tucker, \{Alan C.\} and Bender, \{Edward A.\} and Sagan, \{Bruce E.\}",
year = "2017",
month = oct,
day = "19",
language = "English",
isbn = "9781315156484",
pages = "85--138",
booktitle = "Handbook of Discrete and Combinatorial Mathematics, Second Edition",
publisher = "CRC Press",
}