Mathematical and anthropological analysis of Northern Luzon funeral textile / 
Ma. Louise Antonette N. da Las Penas and analyn V. Salvador-Amores. 
 - Manila:  Department of Science and Technology  2016 
 -  Philippine Journal of Science Vol. 145 No. 1  March 2016, pages 89- 103 .
<br/><br/><label>ISSN: </label>0010-3802 
<br/><br/><label>Subjects--Index Terms: </label>Frieze group,  Funeral textile,  Mathematical symmetry,  Northern Luzon indigenous communities,  Plane crystallographic group,  Symmetry group