The Free On-line Dictionary of Computing (30 December 2018):

Schlaer-Mellor
Mellor

   An object-oriented analysis (OOA), design and modelling
   method that addresses the integration of structural and
   behavioural properties.  It also allows an animation of the
   design.

   I-OOA is a tool that supports the Schlaer Mellor Design
   Method.

   (1995-01-31)