H. Lankamp, W. Th. Nauta and C. MacLean. A new interpretation of the monomer-dimer equilibrium of triphenylmethyl- and alkylsubstituted-diphenyl methyl-radicals in solution (англ.) // Tetrahedron Letters[англ.] : journal. — 1968. — Vol. 9, no. 2. — P. 249—254. — doi:10.1016/S0040-4039(00)75598-5.
H. Lankamp, W. Th. Nauta and C. MacLean. A new interpretation of the monomer-dimer equilibrium of triphenylmethyl- and alkylsubstituted-diphenyl methyl-radicals in solution (англ.) // Tetrahedron Letters[англ.] : journal. — 1968. — Vol. 9, no. 2. — P. 249—254. — doi:10.1016/S0040-4039(00)75598-5.