Não informado. (1991). Applications of Mathematics. Czechoslovak Academy of Sciences.
Lua i Stíl Chicago (17ú heag.)Não informado. Applications of Mathematics. Praha: Czechoslovak Academy of Sciences, 1991.
Lua MLA (8ú heag.)Não informado. Applications of Mathematics. Czechoslovak Academy of Sciences, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.