@article{Gortmaker1997,
author = {Gortmaker, S. and Kagan, J. and Caspi, A. and Silva, P.},
title= {Daylength during pregnancy and shyness of children: Results from Northern and Southern hemisphere},
year = {1997},
doi = {10.1002/(SICI)1098-2302(199709)31:2<107::AID-DEV3>3.0.CO;2-O},
journal = {Developmental Psychobiology},
volume = {31},
number = {2},
pages = {107--114},
}