Heidelberger, M. (2003). The mind-body problem in the origin of Logical Empiricism: Herbert Feigl and psychophysical parallelism. In P. Parrini, W. C. Salmon, & M. H. Salmon (Eds.), Logical Empiricism: Historical and Contemporary Perspectives (pp. 233-262). University of Pittsburgh Press.
[Citing Place (1988a)]  [Citing Place (1990a)]  
Citing Place (1990a) in context (citations start with an asterisk *):
Section Psychophysical Parallelism from Fechner to Feigl
* But the most significant form of psychophysical parallelism of interest here is not Ernst Mach's, but rather what is called "critical realism." The main advocate of this interpretation during Fechner's and Mach's time was the Austrian philosopher Alois Riehl. He wrote on the mind-body problem in 1872 and then extensively again in 1887 (Riehl [1872] 1925, 128; 1887, 176-216; 1894, 167205). Riehl defended the second type of the monistic form of psychophysical parallelism, which assumed that the reality underlying physical and psychical aspects of our perception is identical with Kant's noumenon. Since he shared this and other concepts with Kant, he is usually considered a neo-Kantian. But contrary to the other – for the most part Marburger scholars – he interpreted noumena as objective and causally effective reality independent of human consciousness, and he defended, in contrast to Kant, the notion that noumena are to a certain degree recognizable. Riehl labeled this mind-body conception "identity theory" and "realistic monism," thereby idiosyncratically constricting the traditional meanings of those terms (This contradicts Place’s claim that in 1933 the American psychologist E. G. Boring may well have been the first to use the term "identity theory." See Place 1990, 22).