The UNIVAC mainframe at Stony Brook had FORTRAN supplied by the vendor. It was almost certainly not F77 in Fall 1978.
The values of parameters are analyzed in fair detail in math.stachexchange.com
Just search for brooks matelski on that site to get
“Grid Spacing …” The cells are rectangular with aspect 5/3
Prof Laufer was a senior prof in Fall 1978. If someone was a gofer, was it a green postdoc
or a senior prof? He had the key to the Math dept
dumb terminal and acoustic modem which he let
me use. The department had no output device so
I had to hike to the computer building to retrieve
every printout.
Regards JPM