First publication Vitamin D Wiki has seen on the subject
CLICK HERE for PDF, Published by Chief Health Officer Victoria Australia – May 2010
This publication is a good first start, includes many good points

Hopefully future versions of papers like this one will point out that:

• Differences between UVA (suntan) and UVB (make vitamin D)
• UVB is about 3X less in shade, and UVA is reduced even more
• Windows do not transmit any UVB to generate vitamin D
  And that it may be that the UVA transmitted by windows uses up some of the vitamin D
• UVB lighting is possible from special lamps inside of offices (truly full spectrum)
• UVB reflects poorly from buildings – so not as much vitamin D at the bottom of an urban canyon
• There is less UVB in large cities due to pollution/ozone

See also Vitamin D Life

• Overview UV and vitamin D
• UV produces more than vitamin D – Aug 2011
• UV - not too little and not too much
• UVA through window glass decreases vitamin D
• Overview Skin and vitamin D
• Ways to increase the amount of vitamin D you get from UV or the sun: suntan oil, reflectors
• Do UVA and UVB affect the body in different ways Yes: UVA tan, UVB ==> Vitamin D
• When your shadow is as long as you are, you get about 50% of UVB
• No – 10 minutes per day of sun-UVB is NOT enough which includes the following
  WRONG most of the time
  5-10 minutes is enough IF you are near the equator
  AND young
    AND not obese
       AND have light skin
        AND it is summer
          AND it is the middle of the day
            AND you have lots of skin exposed to the sun
              AND you are lying down
                AND you are not wearing sunscreen.