Purba, Jusup Roni Pardamean
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2020
UI - Skripsi (Membership)
Surip
2013
UI - Tesis (Membership)
Gould, Ronald
The Benjamin Cumming , 1988
Buku Teks
Hsu, Lih-Hsing
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Bollobas, Bela
Academic Press, 1978
Buku Teks