The role of number words: the phonological length effect in multidigit addition
Memory & Cognition (2012) - Comment
pubmed: 22753010  doi: 10.3758/s13421-012-0228-y  issn: 1532-5946  issn: 0090-502x 

Nicolai Klessinger, Marcin Szczerbinski, Rosemary Varley