ダニエル・クレイトマン
J; Rothschild, B. L (1975). “Asymptotic enumeration of partial orders on a finite set”. Trans. Amer. Math. Soc. 205: 205–220. doi:10.1090/s0002-9947-1975-0369090-9. MR0369090. http://dml.cz/bitstream/handle/10338.dmlcz/126183/MathBohem_122-1997-1_7.pdf.
with G. Markowsky: Kleitman, D; Markowsky, G (1975). “On Dedekind's problem: The number of isotone Boolean functions. II”. Trans. Amer. Math. Soc. 213: 373–390. doi:10.1090/s0002-9947-1975-0382107-0. MR0382107.
with B. Rothschild and Joel H. Spencer: Kleitman, Daniel J; Rothschild, Bruce R; Spencer, Joel H (1976). “The number of semigroups of order n”. Proc. Amer. Math. Soc. 55 (1): 227–232. doi:10.1090/s0002-9939-1976-0414380-0. MR0414380.
with Gil Kalai: Kalai, Gil; Kleitman, Daniel J (1992).