- ISBN: 978-3-330-87046-8

- ISBN: 978-3-639-54421-3

DYNAMICS OF A DRY FRICTION OSCILLATOR UNDER TWO - FREQUENCY EXCITATIONS. Université de Yaoundé I 2011-2012

- ISBN: 978-3-8417-4891-1

- ISBN: 978-613-8-44729-0

- ISBN: 978-620-2-28956-6

Diversity, evolution, biogeography and ecology of a tropical brown algal genus

- ISBN: 978-613-8-46105-0

- ISBN: 978-3-330-87139-7

- ISBN: 978-620-2-28504-9

Clinical characteristics and pathophysiology

- ISBN: 978-613-1-59012-2

- ISBN: 978-620-2-28792-0