Não informado. (1991). Mathematical Models & Methods in Applied Sciences. World Scientific.
Lua i Stíl Chicago (17ú heag.)Não informado. Mathematical Models & Methods in Applied Sciences. Singapore: World Scientific, 1991.
Lua MLA (8ú heag.)Não informado. Mathematical Models & Methods in Applied Sciences. World Scientific, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.