@book{15978,
	author = {Orgoványi-Gajdos, Judit,},
	title = {Teachers’ Professional Development on Problem Solving :},
	publisher = {Brill | Sense,},
	year = {2016.},
	series = {Educational Research E-Books Online, Collection 2005-2017, ISBN: 9789004394001},
	address = {Leiden, },
	url = {http://dx.doi.org/10.1007/978-94-6300-711-5}
}