E. V. Markasova, O. A. Mitrofanova. GEMINATION (TRIPLE REPEAT) ACCORDING TO THE CORPUS DATA
Trudy IRY RAS. 2024. № 4 (42), Pages. 41 - 59

Ronald F. Feldstein. On Russian concessive-adversative constructions with pronominal reduplication of the type «уж чем-чем, а этим его не удивишь»
Trudy IRY RAS. 2016. № 4 (10), Pages. 329 - 343