@book{Char1992,
author = {Char, B.W. and Geddes, K.O. and Gonnet, G.H. and Leong, B.L. and Monagan, M.B. and Watt, S.M.},
title= {First leaves: A tutorial introduction to Maple V},
year = {1992},
doi = {10.1007/978-1-4615-6996-1},
address = {New York},
publisher = {Springer-Verlag},
}