Huseyin Kocak (1989): Phaser. (Differential and Difference
 Equations through Computer Experiments, Springer-Verlag)
  [CALCULUS, DIFFERENCE EQUATIONS, DIFFERENTIAL EQUATIONS, 
  ECOLOGY, MODELING, MULTIPLE POPULATIONS, PHASEPLANE,
  POPULATION, SINGLE POPULATION, DOS]

 <The software had great graphing capabilities, but it required a
handbook in order to use.  The program would be ideal to use with
a class in differential equations.  The program allows the user to
visualize equations in up to four dimensions.  The way that the
program rotates projections as well as demonstrate different views
makes it easy to visualize actual problems. The program is
outstanding in its graphing capabilities; however, it is hard to
use these assets without the help of the handbook.  To a naive
user, it would be difficult to access the program and begin
graphing.  Also, there is very little explanations available as to
the what exactly the software is doing.  However, if the person
using the software has some computer knowledge and access to the
handbook, this software would certainly increase their
visualization of differential and difference equations.  (REVIEW 2:
RATING = 6)

From:
                   LISTING OF SOFTWARE (7/93)
       QUANTITATIVE CURRICULUM FOR LIFE SCIENCE STUDENTS
                    (Supported by NSF Grant)


REVIEWER 1 - Azmy Ackleh  
REVIEWER 2 - Shannon Peak 
REVIEWER 3 - Holly Gaff

For more information contact:
Dr. Louis J. Gross
Mathematics Department 
University of Tennessee
Knoxville, TN 37996-1300
(615) 974-4295    (615) 974-6576 (FAX)
gross@utkvx.utk.edu
---------------------------------------------------------------------- 
Reviewer:
Journal:  AMS Notices
Volume:   37
Number:   
Date:     April 1990
Page:     430
---------------------------------------------------------------------- 
Reviewer: di Franco, Roland
Journal:  The College Mathematics Journal
Volume:   21
Number:   3
Date:     May 1990
Page:     242
----------------------------------------------------------------------
Reviewer: Warren Page and Ladnor Geissinger
Journal:  UME Trends
Volume:   1
Number:   6
Date:     January 1990
Page:     2
----------------------------------------------------------------------