@conference {OA2006,
	title = {Equipment for Measuring the Road?Tyre Cohesion},
	booktitle = {6th National Congress of Mechanics},
	year = {1989},
	month = {September},
	url = {http://oa.uninova.pt/2006/},
	author = {Alexander Tatzov and D. Dimitrov and T. Borisov and R. Botchev and P. Pashov and P. Petrov and D. Petrov and Stanimir Valtchev}
}
