@inproceedings { ,
	title = {Introduction to Object-Oriented Programming},
	booktitle = {6th National Conference on Microcomputers: Modern Programming Languages, {\'L}{\u A}{\l}d{\'L}{\c s}, Poland},
	year = {1989},
	month = {01/1989},
	pages = {61-75},
	type = {inproceedings},
	author = {Wojciech Cellary}
}
