1993 and 1996, Bo Einarsson and Yurij Shokin . ... This tutorial is written in order to ease the transition from the very common and popular programming language Fortran 77 to the more modern Fortran 90. ... This hypertext version is available on the net as http://www.nsc.liu.se/~boein/f77to90/f77to90.html . ... When reading a chapter (or appendix) the arrows at the bottom will bring you to the previous chapter, the tutorial home page (this page, at the start of the contents) or the next chapter. ...