@article{Hasler1978,
	title = {On a quantum-mechanical model for a Maser II},
	author = {Martin Hasler},
	journal = {Physica A: Statistical and Theoretical Physics},
	month = {May},
	number = {3-4},
	pages = {507--533},
	url = {http://www.sciencedirect.com/science/article/B6TVG-46X9K8B-3K/1/e5e98df90222f805299552bb2f0d050f},
	volume = {91},
	year = {1978},
	biburl = {http://www.bibsonomy.org/bibtex/2173cee00b142860ab91547b513f3f535/smicha},
	description = {Physica A},
	keywords = {imported }
}