Shortly here was some discussion about the above topic.
The answers have been a little bit uncertain.
We have done some work on this topic, especially on LTCC.
If someone is still interested -
we prepared a web-page with our papers in pdf format:
http://www-kte.tu-ilmenau.de/CAD/lines.html
Maybe this gives some more information

Regards
Gert


--------------------------------------------------------------------
| Gert Winkler                    |Phone: +49 3677 69 2606         |
| Technische Universitaet Ilmenau |Fax:   +49 3677 69 1204         |
| Fakultaet EI, Fachgebiet KTE    |                                |
| PSF 100565,  D-98684  Ilmenau   |e-mail:                         |
| Germany                         [log in to unmask] |
--------------------------------------------------------------------

##############################################################
IPC Designers Council Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE DESIGNERCOUNCIL <your full name>
To unsubscribe:   SIGNOFF DESIGNERCOUNCIL
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################