, 2014a, Documentary languages and the demarcation of information units in textual information: the case of Julius O. Kaiser's systematic indexing, in F. Ibekwe-San Juan & T. M. Dousa (eds.), Theories of information, communication and knowledge, Dordrecht, Springer, pp. 297-323.
, 2014b, Introduction, in F. Ibekwe-San Juan & T. M. Dousa (eds.), Theories of information, communication and knowledge, Dordrecht, Springer, pp. 1-21.
with Ibekwe-San Juan, F. (eds) , 2014a, Theories of information, communication and knowledge: a multidisciplinary approach, Springer, Dordrecht.