Radchenko, A. G.; Czechowska, W.; Czechowski, W.; Siedlar, E. 1999b. Four species of the ant genus Lasius F. new to Poland, with additions to the records for previously reported species (Hymenoptera, Formicidae). Fragmenta Faunistica (Warsaw) 42:115-121.

Radchenko, A. G.; Czechowski, W.; Czechowska, W. 1999b. Tetramorium insolens (F. Sm.) i Tetramorium caldarium (Rog.) [a nie T. guineense (F.) i T. simillimum (F. Sm.)] (Hymenoptera, Formicidae) w Polsce. Przeglad Zoologiczny 43:105-106.

Czechowski, W.; Czechowska, W. 2000. Epimyrma ravouxi (André, 1896) (Hymenoptera, Formicidae) in the Pieniny Mts - notes on its occurrence and biology. Fragmenta Faunistica (Warsaw) 43:29-33.

Czechowski, W.; Radchenko, A. 2000. Formica glauca Ruzsky, 1895 (Hymenoptera, Formicidae) in Poland. Fragmenta Faunistica (Warsaw) 43:127-129.

Czechowska, W.; Czechowski, W. 2001. Leptothorax sordidulus Müll. (Hymenoptera, Formicidae) - nowy dla Polski gatunek mrówki - w Ojcowskim Parku Narodowym. Parki Narodowe i Rezerwaty Przyrody 20(1):93-94.

Czechowski, W.; Czechowska, W. 2001. Uwagi o taksonomii I wystepowaniu w Polsce Leptothorax nylanderi (Först.) (Hymenoptera, Formicidae). Przeglad Zoologiczny 45:95-98.

Czechowski, W.; Czechowska, W. 2002. Formica pressilabris Nyl. (Hymenoptera, Formicidae) - nowy dla polskiej części Puszczy Białowieskiej gatunek mrówki. Parki Narodowe i Rezerwaty Przyrody 21(2):229-230.

Czechowski, W.; Radchenko, A.; Czechowska, W. 2002. The ants (Hymenoptera, Formicidae) of Poland. Warsaw: Museum and Institute of Zoology, Polish Academy of Sciences, 200 pp. PDF

Czechowska, W.; Czechowski, W. 2003. Further record of Lasius neglectus Van Loon, Boomsma et Andrasfalvy (Hymenoptera: Formicidae) for Warsaw, with a key to the Polish species of the subgenus Lasius s. str. Fragmenta Faunistica (Warsaw) 46:195-202.

Radchenko, A.; Elmes, G. W.; Czechowska, W.; Stankiewicz, A.; Czechowski, W.; Sielezniew, M. 2003. First records of Myrmica vandeli Bondroit and M. tulinae Elmes, Radchenko et Aktaç (Hymenoptera: Formicidae) for Poland, with a key for the scabrinodis- and sabuleti-complexes. Fragmenta Faunistica (Warsaw) 46:47-57.

Radchenko, A.; Czechowska, W.; Czechowski, W. 2004. Mrówki - Formicidae. Klucze do Oznaczania Owadów Polski 24(63):1-138.

Radchenko, A.; Czechowska, W.; Czechowski, W.; Antonova, V.; Stankiewicz, A. 2005. Myrmica lacustris Ruzsky (Hymenoptera: Formicidae), an ant species new for Poland. Fragmenta Faunistica (Warsaw) 48:167-174.

Czechowski, W.; Czechowska, W.; Vepsäläinen, K. 2005. Structure and succession of Lasius s. str. (Hymenoptera: Formicidae) assemblages in a Finnish sand dune area - reassessment after taxonomic revisions of the subgenus. Entomologica Fennica 16:2-8. PDF

Czechowski, W.; Radchenko, A. 2006. Formica lusatica Seifert, 1997 (Hymenoptera: Formicidae), an ant species new to Finland, with notes on its biology and the description of males. Myrmecologische Nachrichten 8:257-262. PDF

Suchocka, H.; Czechowski, W.; Radchenko, A. 2008. Second report on the occurrence of Camponotus truncatus (Spinola) (Hymenoptera: Formicidae) in Poland, with a key to the Polish species of the genus Camponotus Mayr. Fragmenta Faunistica (Warsaw) 51:9-13. PDF

Czechowski, W. 2009. Myrmica slovaca Sadil and Myrmica deplanata Emery rather than M. salina Ruzsky and M. lacustris Ruzsky (Hymenoptera: Formicidae) in Poland. Polish Journal of Entomology 78:315-317. PDF

Czechowski, W.; Radchenko, A. 2010. Ponera testacea Emery, 1895 (Hymenoptera: Formicidae) in Poland. Polish Journal of Entomology 79:327-337. PDF

Czechowski, W.; Radchenko, A.; Czechowska, W.; Vepsäläinen, K. 2012. The ants (Hymenoptera: Formicidae) of Poland with reference to the myrmecofauna of Europe. (Fauna Poloniae n.s. 4). Warsaw: Natura Optima Dux Foundation, 496 pp.