Steve Abbott
Differential equations, by SMP 16 – 19 Mathematics. Pp 92. £3-95. 1992. ISBN 0-521-42649-9 (Cambridge University Press) - Differential equations – unit guide. Pp37. £4-95. 1992. ISBN 0-521-42660-X (Cambridge University Press) - Volume 79 Issue 484
Nigel Webb
Jan Dangerfield
Peter Malone