There are the relevant wikipedia entries, but if you want more detail... http://www.jstor.org/page/termsConfirm.jsp?redirectUri=/stable/pdfplus/188499.pdf http

There are the relevant wikipedia entries, but if you want more detail... http://www.jstor.org/page/termsConfirm.jsp?redirectUri=/stable/pdfplus/188499.pdf http://www.jstor.org/page/termsConfirm.jsp?redirectUri=/stab... http://www.google.com/url?sa=t&ct=res&cd=5&url=http%3A%2F%2Fwww.citebase.org%2Ffulltext%3Fformat%3Dapplication%252Fpdf%26identifier%3Doai%253AarXiv.org%253A0711.0035&ei=CDNYSOfaKoio8ASS49WFCQ&usg=AFQjCNGPaJh8pbOidmFogmWTnQtor5jqqA&sig2=utq1sZiuVRTcAaU5pndvvg http://www.google.com/url?sa=t&ct=res&cd=5&url=h... edit: this might be better for GRW http://arxiv.org/pdf/quant-ph/0406094v2 http://arxiv.org/pdf/quant-ph/0406094v2 http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fwww.lps.uci.edu%2Fhome%2Ffac-staff%2Ffaculty%2Fbarrett%2FManyMindsManyWorlds.pdf&ei=iDNYSN7kJ5yW8wSLpMGTCQ&usg=AFQjCNEbY9mKjxmMLz4uBnPb0FMum2ZHdQ&sig2=1MrKcnTCw94O7-h9jp-MGg http://www.google.com/url?sa=t&ct=res&cd=1&url=h...