APA

Helmers G., Lundkvist S., . (1988). Detection distances to obstacles on the road seen through windscreens in different states of wear. Linköping: Statens Väg- och Trafikinstitut.

Chicago

Helmers Gabriel, Lundkvist Sven-Olof, . 1988. Detection distances to obstacles on the road seen through windscreens in different states of wear. Linköping: Statens Väg- och Trafikinstitut.

Harvard

Helmers G., Lundkvist S., . (1988). Detection distances to obstacles on the road seen through windscreens in different states of wear. Linköping: Statens Väg- och Trafikinstitut.

MLA

Helmers Gabriel, Lundkvist Sven-Olof, . Detection distances to obstacles on the road seen through windscreens in different states of wear. Linköping: Statens Väg- och Trafikinstitut. 1988.