%0 Journal Article %T Mothers Make a Difference: Mothers Develop Weaker Bonds with Immature Sons than Daughters %A Anja Widdig %A Doreen Langos %A Lars Kulik %J Archive of "PLoS ONE". %D 2016 %R 10.1371/journal.pone.0154845 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4871456/