Please download TeX Macro style files which can be used to reformulate your manuscripts into the journal style forms.
LaTex Macros: ijnam.tex andijnam.cls
AMSTex Macros: ijnam.tex and ijnam.cls
Note: ijnam.tex needs an input file, mydef.sty , in which you can define all your own commands. Of course you can put all your commands into the TeX file and un-comment the line
%\usepackage{mydef}