Akin, J. E., 2003: Object-Oriented Programming via Fortran 90/95. Cambridge University Press, 350pp.
Draft PDF files can be downloaded from <URL:http://www.owlnet.rice.edu/~mech403/Fortran_90/OOP_w_F90_book.htm>.
Toyoda, E., Ishiwatari, M., Horinouchi, T., Akahori, K., Numaguti, A., Hayashi, Y.-Y., GFD Dennou Club Davis Project, 2000: gtool4 netCDF Conventions, http://www.gfd-dennou.org/library/gtool4/, GFD Dennou Club
About relation between gt4f90io and gtool4 netCDF Conventions, see Reference Manual "gt4_history" module (JAPANESE only).
