id	keyword
asir-40046	bus
asir-40046	cost
asir-40046	team
asir-40046	buses
asir-40046	model
asir-40046	number
asir-40046	time
asir-40046	research
asir-40046	figure
asir-40046	vol
asir-40046	route
asir-40046	science
asir-40046	www.scholink.org/ojs/index.php/asir