internal corner flashing detail?

[browfish]

Does any one have an illustration for flashing the hingh side of a chimney.
I live in a semi detached with two chimneys on the party wall with a parapet wall running doen the middle so its not like flashing a normal chimney.
I have replaced the whole roof and done all the rest of the flashing, just not sure of how to do this internal corner. Its is currently seeping water inside every time it rains.

Thanks.

 

[masona]

Here

 

[browfish]

Thanks for that masona.
I found that site myself but it isnt as simple as that as i am not flashing th whole chimney. THere is a parapet wall runs up between the two houses (party wall), so effectively the chimney in that picture is split in 2.
Any ideas?
thanks again

 

[masona]

The parapet flashing should be under the apron flashing of the chimney otherwise rain will go underneath, I see if I can find a picture