As a Brooklyn appeals panel reconvenes today to consider the constitutionality of Governor David A. Paterson’s appointment of Richard Ravitch as his second-in-command, both contending parties are getting some outside support.

The July 8 appointment goes against “two hundred years of history and…all formal debates and study over this matter,” according to an amicus brief filed by a former lieutenant governor and three academics who support Senator Dean G. Skelos, R-Rockville Centre, against the governor.