@inbook{10.2307/j.ctt7sd75.18,
ISBN = {9780691141336},
URL = {http://www.jstor.org/stable/j.ctt7sd75.18},
abstract = {We will now take a brief look at several of the ways in which${H_n}$appears, and the pattern of numbers$1,\;\tfrac{1}{2},\;\tfrac{1}{3},\; \ldots $forming its terms appear, in some areas of considerable diversity. The selection is by no means comprehensive and each initiative can be developed (in some cases very considerably) beyond where we leave it, but to delve deeper or to embrace more widelywould engulf more pages than this book could afford. Firstly, though, we ought to address the question of the name ‘harmonic’.With two numbersaandb, if one had to write down three examples of an},
author = {Freeman Dyson},
bookauthor = {Julian Havil},
booktitle = {Gamma: Exploring Euler's Constant},
pages = {119--138},
publisher = {Princeton University Press},
title = {It’s a Harmonic World},
year = {2003}
}