1. The structure and chemical composition of the Golgi element;Baker J. R.;Quart. J. micr. Sci.,1944
2. Die Systematik der euthyneuren Schnecken;Boettger C. R.;Zool. Anz. suppl.,1954
3. Insemination in Limnaea stagnalis L;Bretschneider L. H.;Proc. K. ned. Akad. Wet.,1948
4. The mechanism of oviposition in Limnaea stagnalis L;Bretschneider L. H.;Proc. K. ned. Akad. Wet.,1948