@article{Medawar1940,
author = {Medawar, P.B.},
title= {The growth, growth energy, and ageing of the chicken's heart},
year = {1940},
doi = {10.1098/rspb.1940.0042},
journal = {Proceedings of the Royal Society},
volume = {B129},
number = {856},
pages = {332--355},
}