8[2]Ingenuin H,William P E.3,9-Dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5] undecane-9-oxide and process for preparing same[P].US:4 456567,198406-26.
9[3]Gary V M,James F Y.Process for preparing bis (dialkylphenyl) pentaerythritol diphosphites[P].US:4 665 211,1985-12-03.
10[4]Manji S I,Chinehite E M,Haruki O O.Method for producing hydroxyphenylpropionic acid ester[P].US:4 754 045,1988-06-28.
