The songkok or peci or kopiah is a cap widely worn in Indonesia, Brunei, Malaysia, Singapore, the southern Philippines and southern Thailand, mostly among Muslim males. It has the shape of a truncated cone, usually made of black or embroidered felt, cotton or velvet.

Associated production of a light pseudoscalar Higgs boson with a chargino pair in the NMSSM
The light pseudoscalar Higgs boson in NMSSM
Possible Nematic Order Driven by Magnetic Fluctuations in Iron Pnictides
Excitonic Instabilities and Insulating States in Bilayer Graphene
Efficient regeneration and Agrobacterium-mediated transformation protocol for recalcitrant indica rice (Oryza sativa L.).
Strong Landau-quantization effects in high-magnetic-field superconductivity of a two-dimensional multiple-band metal near the Lifshi...
Possible surface nematic order in iron pnictides
Interplay between orbital-quantization effects and the Fulde-Ferrell-Larkin-Ovchinnikov instability in multiple-band layered superco...
Electronic correlation effects in multi-band systems
GIC, seeking yield, raises China and EM allocations