@book{ Solr-58673, title = {Zatigarritasun irizpideak / Xabier Lizarraga}, series = {DBH 1 Matematika. Xabier Lizarraga (Youtube kanala)}, author = {Lizarraga, Xabier}, address = {Donostia}, publisher = {Xabier Lizarraga}, year = {2017}, url = {https://www.youtube.com/channel/UCSIIJ6IyGIgABk6p9MZy5gw/featured} url = {https://youtu.be/M9NXeGjWp9k} }