1. Wstep do teorii wyszukiwania informacji;Czerny,1978
2. Building better SDI profiles for users of large, multidisciplinary data bases;Sprague;J. ASIS,1978
3. Automatic query adjustment in document retrival;Vernimb;Inform. Proc. Management,1977
4. On the equivalence of Boolean and weighted searching based on the convertibility of query forms;Angione;J. ASIS,1975
5. Based current awareness services;Leggate;J. Docum,1975