nishikawa, k; matsui, m; yong, hs; ahmad, n; yambun, p; belabut, dm; sudin, a; hamidy, a; orlov, nl; ota, h; yoshikawa, n; tominaga, a; shimada, t.  (2012).  molecular phylogeny and biogeography of caecilians from southeast asia (amphibia, gymnophiona, ichthyophiidae), with special reference to high cryptic species diversity in sundaland.  - molecular phylogenetics and evolution.  63(3):714-723. 

atsushi kurabayashi, masafumi matsui, daicus m belabut, hoi-sen yong, norhayati ahmad, ahmad sudin, mitsuru kuramoto, amir hamidy and masayuki sumida.  (2011).  from antarctica or asia? new colonization scenario for australian-new guinean narrow mouth toads suggested from the findings on a mysterious genus gastrophrynoides..  - bmc evolutionary biology.  11:175. 

masafumi matsui, amir hamidy, daicus m. belabut, norhayati ahmad, somsak panha, ahmad sudin, wichase khonsue, hong-shik oh, hoi-sen yong, jian-ping jiang, kanto nishikawa.  (2011).  systematic relationships of oriental tiny frogs of the family microhylidae (amphibia, anura) as revealed by mtdna genealogy.  - molecular phylogenetics and evolution.  61: 167?176. 

nicholas j. berry, oliver l. phillips, simon l. lewis, jane k. hill, david p. edwards, noel b. tawatao, norhayati ahmad, david magintan, chey v. khen, m. maryati, robert c. ong, keith c. h.  (2010).  the high value of logged tropical forests: lessons from northern borneo.  - biodiversity and conservation.  19(4):985-997. 

ramlah zainudin, shukor mohd nor, norhayati ahmad, badrul munir md-zain and mustafa abdul rahman.  (2010).  genetic structure of hylarana erythraea (amphibia: anura: ranidae).  - zoological studies.  49(5):688-702. 

matsui, m; hamidy, a; murphy, rw; khonsue, w; yambun, p; shimada, t; ahmad, n; belabut, dm; jiang, jp.  (2010).  phylogenetic relationships of megophryid frogs of the genus leptobrachium (amphibia, anura) as revealed by mtdna gene sequences.  - molecular phylogenetics and evolution.  56(1):259-272.