[27]Cohen D,  Hegarty J,  Eisdorfer C.The desk directory of social resources: a physicians' reference guide to social and community services for the aged.
[28] Tomita Naoki, Yoshimura Kimio, Ikegami Naoki. Impact of home and community-based services on hospitalisation and institutionalisation among inpiduals eligible for long-term care insurance in Japan[J]. BMC Health Services Research, 2010, 10(1).
[29] Grayer Justin, Cape John, Orpwood Lisa et al.. Facilitating access to voluntary and community services for patients with psychosocial problems: a before-after evaluation[J]. BMC Family Practice, 2008, 9(1).
[30] Colette Marie Lord. Indirect aggression and social support among elderly retirement community residents[D]. Alliant International University, San Diego, 2005. 失独家庭文献综述及参考文献(3):http://www.751com.cn/wenxian/lunwen_30705.html