kenneth-l-duval-and-cheryl-duval-on-behalf-of-themselves-and-all-other , 578 F.2d 721 ( 1978 )
Van Zee v. Assam , 336 N.W.2d 162 ( 1983 )
Vogt v. Nelson , 69 Wis. 2d 125 ( 1975 )