In Re the Estate of Roehlke , 231 N.W.2d 26 ( 1975 )
Coffman v. Adkins , 338 N.W.2d 540 ( 1983 )
Matter of Estate of Clark , 357 N.W.2d 34 ( 1984 )
Punelli v. Punelli , 364 N.W.2d 259 ( 1984 )