Patterns of Marital Relationship Change across the Transition from One Child to Two
Couple and Family Psychology Research and Practice (2015) - Comment
pubmed: 26568895  doi: 10.1037/cfp0000046  issn: 2160-410x  issn: 2160-4096 

Brenda L. Volling, Wonjung Oh, Richard Gonzalez, Patty X. Kuo, Tianyi Yu