Question: Green Permaculture Rooftop

A community garden group has gotten a committment from a developer to build a garden and community center attached to their project. We have the wonderful opportunity to submit designs, and want to have a green, permaculture rooftop. My question is in two parts.

1) what are resources for architextual design for rooftop gardens? The more nitty gritty details the better. I'm wondering if there is a journal, bible-like book, or which databases to search. Basically looking for core primer references.

2) same question as relating to permaculture. I know the philosophy of it, and have a bio background. I'm looking for a proven design (if any) for the new york city biome. If there is a journal of permaculture, that would be awesome.

Green Permaculture Rooftop

Green Roofs: green roofs can improve the energy performance of federal buildings, help manage stormwater, reduce airborne emissions, and mitigate the effects of urban heat islands / Federal Energy Management Program (U.S.) ; National Renewable Energy Laboratory (U.S.). [Washington, D.C.] :; U.S. Dept. of Energy, Energy Efficiency and Renewable Energy, 2004-08
Series: Federal technology alert / A New Technology Demonstration publication; Variation: Federal technology alert.
Report No: DOE/EE-0298; NREL/BK-710-36060

Guidelines for the planning, execution and upkeep of green-roof sites :
roof-greening guidelines (1995 edition) ; with Methods to be employed when investigating vegetation substrates and aggregate-type drainage materials used at roof-greening sites (1995 edition) ; and, Procedure for investigating resistance to root penetration at green-roof sites (1992 edition, up-dated in 1995). 
Publication: Bonn : Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau e.V., 1996, 1995

The American Institute of Architects
AIA/COTE: top ten green projects : 20 River Terrace — The Solaire
Describes the planning process, materials, financial, etc. aspects of The Solaire Project

Journals:
The Permaculture Activist "North America's leading permaculture periodical offering articles on permaculture design, edible landscaping, bioregionalism, aquaculture, natural building, earthworks, renewable energy..."
ISSN: 0897-7348

Permaculture Magazine "This leading environmental magazine is the vanguard of permaculture"

The International permaculture solutions journal
ISSN: 1046-8366

Additional Resources:
American Society of Landscape Architects : Ecological Theatre

ATTRA - National Sustainable Agriculture Information Service
Permaculture Resources and education

Green Roofs for Healthy Cities (greening rooftops for sustainable communities conference: may 2005, Washington DC)

Permaculture International Ltd. non-profit organization; offers resources and training to members for permaculture and related activities.

Permaculture Information Web