| http://www.w3.org/ns/prov#value | - he like; triarylsulfonium salts of the general formula Ar3 S+ X-, wherein Ar is an aromatic ring such as hydroxy benzene, methoxy benzene, butyl benzene, butoxy benzene, octyl benzene, dodecyl benzene, or the like and X is an ion of low nucleophilicity, such as PF6, AsF6, SbF6, BF4,CF3 SO3, or the like; nonradical initiators comprising amine salts of alpha-ketocarboxylic acids, such as the tributy
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