Volumes 21 and 29 of the International Humanitarian Law Series published by Martinus Nijhoff Publishers are now available. 
Volume 21 entitled Violations of the Rules Applicable in Non-International Armed Conflicts and Their Possible Causes The Case of Somalia by  Omar Abdulle Alasow has just been published. Here’s the abstract:

While all armed conflicts are marked by violations of international humanitarian law, non-international armed conflicts appear to be characterised by even more serious violations of international humanitarian law on a colossal scale. This study is aimed at understanding the possible factors that may cause parties to non-international armed conflicts to engage in violations despite the fact that not only international humanitarian law but also other bodies of rules (e.g. legal and moral) impose restrictions and obligations similar to international humanitarian law. Somalia, which for over two decaces has been experiencing internal armed conflicts marked by widespread violations, is a typical case.

This study addresses the root causes of the internal armed conflict in Somalia and identifies factors which contributed to the collapse of the Somali state and the reasons for its continuing conflict. It also examines the characteristics of the conflict. In order to examine the extent to which applicable rules have been respected or not, the study examines both international rules applicable in non-international armed conflicts and specific Somali rules of warfare. After demonstrating evidence of violations and analysing it, this study seeks to identify possible direct and indirect causes of these violations. In addition, it also seeks to identify whether such possible causes contribute to violations that are unique to the situation in Somalia, or, if not, whether there may be lessons to be learnt for other situations similar to that in Somalia. 

Volume 29 has also been recently and it contains edited (  by Nout van Woudenberg and Liesbeth Lijnzaad) works of the various authors entitled

Protecting Cultural Property in Armed Conflict, An Insight into the 1999 Second Protocol to the Hague Convention of 1954 for the Protection of Cultural Property in the Event of Armed Conflict.

Here is an abstract:
In 2009 it was ten years since the adoption of the Second Protocol to the 1954 Hague Convention for the Protection of Cultural Property in the Event of an Armed Conflict. To celebrate this anniversary, a variety of contributions, focussing on the legal and cultural aspects of the Protocol are presented by Van Woudenberg and Lijnzaad. The innovative aspects of the Second Protocol such as enhanced protection, criminal responsibility and jurisdiction, and the protection of cultural property in armed conflicts not of an international character are addressed. Some country-specific studies are included. It is hoped that this publication will inspire States to accede to the Protocol and that it will serve as a source of inspiration to legal advisers, military personnel and cultural property experts.