00422nam a22001337a 4500082001400000100001900014245007100033260003200104300002900136500003400165700001600199700001600215856005700231  aBEE-4 AKR  aJahanzeb Akram  aElectronic pen for projector screen using ultrasonic triangulation  aIslamabadbNUST-SEECSc2016  a56p.b27cm.eCD Includes  aSupervisors: Dr. Ahmad Salman  aUmair Usman  aWarda Saeed  uhttp://10.250.8.41:8080/xmlui/handle/123456789/10642