Akkermans, Ludovica Maria Wilhelmina (1998) Studies on statistical models for polytomously scored test items. thesis.
Akkermans, Wies and Muraki, Eiji (1997) Item information and discrimination functions for trinary pcm items. Psychometrika, 62 (4). pp. 569-578. ISSN 0033-3123
Bressers, J.T.A. and Richardson, J. and Akkermans, L.M.W. and O'Toole, L.J. (1994) Networks for Water Policy: A Comparative Perspective. Environmental Politics, 3 (4). ISSN 0964-4016
Schuddeboom, J. and Klok, P-J. and Akkermans, L.M.W. (1994) Financial Instruments in Policy Process: The Dutch Case. [Report]